81490860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:318

約数の個数: 240

約数和(自身を含む): 296382240

約数和(自身を除く): 214891380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 27, 30, 33, 34, 36, 44, 45, 51, 54, 55, 60, 66, 68, 81, 85, 90, 99, 102, 108, 110, 132, 135, 153, 162, 165, 170, 180, 187, 198, 204, 220, 255, 269, 270, 297, 306, 324, 330, 340, 374, 396, 405, 459, 495, 510, 538, 540, 561, 594, 612, 660, 748, 765, 807, 810, 891, 918, 935, 990, 1020, 1076, 1122, 1188, 1345, 1377, 1485, 1530, 1614, 1620, 1683, 1782, 1836, 1870, 1980, 2244, 2295, 2421, 2690, 2754, 2805, 2959, 2970, 3060, 3228, 3366, 3564, 3740, 4035, 4455, 4573, 4590, 4842, 5049, 5380, 5508, 5610, 5918, 5940, 6732, 6885, 7263, 8070, 8415, 8877, 8910, 9146, 9180, 9684, 10098, 11220, 11836, 12105, 13719, 13770, 14526, 14795, 15147, 16140, 16830, 17754, 17820, 18292, 20196, 21789, 22865, 24210, 25245, 26631, 27438, 27540, 29052, 29590, 30294, 33660, 35508, 36315, 41157, 43578, 44385, 45730, 48420, 50303, 50490, 53262, 54876, 59180, 60588, 68595, 72630, 75735, 79893, 82314, 87156, 88770, 91460, 100606, 100980, 106524, 108945, 123471, 133155, 137190, 145260, 150909, 151470, 159786, 164628, 177540, 201212, 205785, 217890, 239679, 246942, 251515, 266310, 274380, 301818, 302940, 319572, 370413, 399465, 411570, 435780, 452727, 479358, 493884, 503030, 532620, 603636, 617355, 740826, 754545, 798930, 823140, 905454, 958716, 1006060, 1198395, 1234710, 1358181, 1481652, 1509090, 1597860, 1810908, 1852065, 2263635, 2396790, 2469420, 2716362, 3018180, 3704130, 4074543, 4527270, 4793580, 5432724, 6790905, 7408260, 8149086, 9054540, 13581810, 16298172, 20372715, 27163620, 40745430, 81490860]

約数ペア:

[(1, 81490860), (2, 40745430), (3, 27163620), (4, 20372715), (5, 16298172), (6, 13581810), (9, 9054540), (10, 8149086), (11, 7408260), (12, 6790905), (15, 5432724), (17, 4793580), (18, 4527270), (20, 4074543), (22, 3704130), (27, 3018180), (30, 2716362), (33, 2469420), (34, 2396790), (36, 2263635), (44, 1852065), (45, 1810908), (51, 1597860), (54, 1509090), (55, 1481652), (60, 1358181), (66, 1234710), (68, 1198395), (81, 1006060), (85, 958716), (90, 905454), (99, 823140), (102, 798930), (108, 754545), (110, 740826), (132, 617355), (135, 603636), (153, 532620), (162, 503030), (165, 493884), (170, 479358), (180, 452727), (187, 435780), (198, 411570), (204, 399465), (220, 370413), (255, 319572), (269, 302940), (270, 301818), (297, 274380), (306, 266310), (324, 251515), (330, 246942), (340, 239679), (374, 217890), (396, 205785), (405, 201212), (459, 177540), (495, 164628), (510, 159786), (538, 151470), (540, 150909), (561, 145260), (594, 137190), (612, 133155), (660, 123471), (748, 108945), (765, 106524), (807, 100980), (810, 100606), (891, 91460), (918, 88770), (935, 87156), (990, 82314), (1020, 79893), (1076, 75735), (1122, 72630), (1188, 68595), (1345, 60588), (1377, 59180), (1485, 54876), (1530, 53262), (1614, 50490), (1620, 50303), (1683, 48420), (1782, 45730), (1836, 44385), (1870, 43578), (1980, 41157), (2244, 36315), (2295, 35508), (2421, 33660), (2690, 30294), (2754, 29590), (2805, 29052), (2959, 27540), (2970, 27438), (3060, 26631), (3228, 25245), (3366, 24210), (3564, 22865), (3740, 21789), (4035, 20196), (4455, 18292), (4573, 17820), (4590, 17754), (4842, 16830), (5049, 16140), (5380, 15147), (5508, 14795), (5610, 14526), (5918, 13770), (5940, 13719), (6732, 12105), (6885, 11836), (7263, 11220), (8070, 10098), (8415, 9684), (8877, 9180), (8910, 9146)]