81876420

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1032

約数の個数: 144

約数和(自身を含む): 272982528

約数和(自身を除く): 191106108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 243, 255, 270, 306, 324, 340, 405, 459, 486, 510, 540, 612, 765, 810, 918, 972, 991, 1020, 1215, 1377, 1530, 1620, 1836, 1982, 2295, 2430, 2754, 2973, 3060, 3964, 4131, 4590, 4860, 4955, 5508, 5946, 6885, 8262, 8919, 9180, 9910, 11892, 13770, 14865, 16524, 16847, 17838, 19820, 20655, 26757, 27540, 29730, 33694, 35676, 41310, 44595, 50541, 53514, 59460, 67388, 80271, 82620, 84235, 89190, 101082, 107028, 133785, 151623, 160542, 168470, 178380, 202164, 240813, 252705, 267570, 303246, 321084, 336940, 401355, 454869, 481626, 505410, 535140, 606492, 758115, 802710, 909738, 963252, 1010820, 1204065, 1364607, 1516230, 1605420, 1819476, 2274345, 2408130, 2729214, 3032460, 4093821, 4548690, 4816260, 5458428, 6823035, 8187642, 9097380, 13646070, 16375284, 20469105, 27292140, 40938210, 81876420]

約数ペア:

[(1, 81876420), (2, 40938210), (3, 27292140), (4, 20469105), (5, 16375284), (6, 13646070), (9, 9097380), (10, 8187642), (12, 6823035), (15, 5458428), (17, 4816260), (18, 4548690), (20, 4093821), (27, 3032460), (30, 2729214), (34, 2408130), (36, 2274345), (45, 1819476), (51, 1605420), (54, 1516230), (60, 1364607), (68, 1204065), (81, 1010820), (85, 963252), (90, 909738), (102, 802710), (108, 758115), (135, 606492), (153, 535140), (162, 505410), (170, 481626), (180, 454869), (204, 401355), (243, 336940), (255, 321084), (270, 303246), (306, 267570), (324, 252705), (340, 240813), (405, 202164), (459, 178380), (486, 168470), (510, 160542), (540, 151623), (612, 133785), (765, 107028), (810, 101082), (918, 89190), (972, 84235), (991, 82620), (1020, 80271), (1215, 67388), (1377, 59460), (1530, 53514), (1620, 50541), (1836, 44595), (1982, 41310), (2295, 35676), (2430, 33694), (2754, 29730), (2973, 27540), (3060, 26757), (3964, 20655), (4131, 19820), (4590, 17838), (4860, 16847), (4955, 16524), (5508, 14865), (5946, 13770), (6885, 11892), (8262, 9910), (8919, 9180)]