20723850

素因数分解:

$2^1\times 3^4\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:91

約数の個数: 240

約数和(自身を含む): 71299008

約数和(自身を除く): 50575158

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 25, 27, 30, 34, 35, 42, 43, 45, 50, 51, 54, 63, 70, 75, 81, 85, 86, 90, 102, 105, 119, 126, 129, 135, 150, 153, 162, 170, 175, 189, 210, 215, 225, 238, 255, 258, 270, 301, 306, 315, 350, 357, 378, 387, 405, 425, 430, 450, 459, 510, 525, 567, 595, 602, 630, 645, 675, 714, 731, 765, 774, 810, 850, 903, 918, 945, 1050, 1071, 1075, 1134, 1161, 1190, 1275, 1290, 1350, 1377, 1462, 1505, 1530, 1575, 1785, 1806, 1890, 1935, 2025, 2142, 2150, 2193, 2295, 2322, 2550, 2709, 2754, 2835, 2975, 3010, 3150, 3213, 3225, 3483, 3570, 3655, 3825, 3870, 4050, 4386, 4515, 4590, 4725, 5117, 5355, 5418, 5670, 5805, 5950, 6426, 6450, 6579, 6885, 6966, 7310, 7525, 7650, 8127, 8925, 9030, 9450, 9639, 9675, 10234, 10710, 10965, 11475, 11610, 13158, 13545, 13770, 14175, 15050, 15351, 16065, 16254, 17415, 17850, 18275, 19278, 19350, 19737, 21930, 22575, 22950, 24381, 25585, 26775, 27090, 28350, 29025, 30702, 32130, 32895, 34425, 34830, 36550, 39474, 40635, 45150, 46053, 48195, 48762, 51170, 53550, 54825, 58050, 59211, 65790, 67725, 68850, 76755, 80325, 81270, 87075, 92106, 96390, 98685, 109650, 118422, 121905, 127925, 135450, 138159, 153510, 160650, 164475, 174150, 197370, 203175, 230265, 240975, 243810, 255850, 276318, 296055, 328950, 383775, 406350, 414477, 460530, 481950, 493425, 592110, 609525, 690795, 767550, 828954, 986850, 1151325, 1219050, 1381590, 1480275, 2072385, 2302650, 2960550, 3453975, 4144770, 6907950, 10361925, 20723850]

約数ペア:

[(1, 20723850), (2, 10361925), (3, 6907950), (5, 4144770), (6, 3453975), (7, 2960550), (9, 2302650), (10, 2072385), (14, 1480275), (15, 1381590), (17, 1219050), (18, 1151325), (21, 986850), (25, 828954), (27, 767550), (30, 690795), (34, 609525), (35, 592110), (42, 493425), (43, 481950), (45, 460530), (50, 414477), (51, 406350), (54, 383775), (63, 328950), (70, 296055), (75, 276318), (81, 255850), (85, 243810), (86, 240975), (90, 230265), (102, 203175), (105, 197370), (119, 174150), (126, 164475), (129, 160650), (135, 153510), (150, 138159), (153, 135450), (162, 127925), (170, 121905), (175, 118422), (189, 109650), (210, 98685), (215, 96390), (225, 92106), (238, 87075), (255, 81270), (258, 80325), (270, 76755), (301, 68850), (306, 67725), (315, 65790), (350, 59211), (357, 58050), (378, 54825), (387, 53550), (405, 51170), (425, 48762), (430, 48195), (450, 46053), (459, 45150), (510, 40635), (525, 39474), (567, 36550), (595, 34830), (602, 34425), (630, 32895), (645, 32130), (675, 30702), (714, 29025), (731, 28350), (765, 27090), (774, 26775), (810, 25585), (850, 24381), (903, 22950), (918, 22575), (945, 21930), (1050, 19737), (1071, 19350), (1075, 19278), (1134, 18275), (1161, 17850), (1190, 17415), (1275, 16254), (1290, 16065), (1350, 15351), (1377, 15050), (1462, 14175), (1505, 13770), (1530, 13545), (1575, 13158), (1785, 11610), (1806, 11475), (1890, 10965), (1935, 10710), (2025, 10234), (2142, 9675), (2150, 9639), (2193, 9450), (2295, 9030), (2322, 8925), (2550, 8127), (2709, 7650), (2754, 7525), (2835, 7310), (2975, 6966), (3010, 6885), (3150, 6579), (3213, 6450), (3225, 6426), (3483, 5950), (3570, 5805), (3655, 5670), (3825, 5418), (3870, 5355), (4050, 5117), (4386, 4725), (4515, 4590)]