20197870820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{1669}}^1$

素因数の和:1989

約数の個数: 96

約数和(自身を含む): 44440704000

約数和(自身を除く): 24242833180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 149, 155, 262, 298, 310, 524, 596, 620, 655, 745, 1310, 1490, 1669, 2620, 2980, 3338, 4061, 4619, 6676, 8122, 8345, 9238, 16244, 16690, 18476, 19519, 20305, 23095, 33380, 39038, 40610, 46190, 51739, 78076, 81220, 92380, 97595, 103478, 195190, 206956, 218639, 248681, 258695, 390380, 437278, 497362, 517390, 605089, 874556, 994724, 1034780, 1093195, 1210178, 1243405, 2186390, 2420356, 2486810, 3025445, 4372780, 4973620, 6050890, 6777809, 7709111, 12101780, 13555618, 15418222, 27111236, 30836444, 32577211, 33889045, 38545555, 65154422, 67778090, 77091110, 130308844, 135556180, 154182220, 162886055, 325772110, 651544220, 1009893541, 2019787082, 4039574164, 5049467705, 10098935410, 20197870820]

約数ペア:

[(1, 20197870820), (2, 10098935410), (4, 5049467705), (5, 4039574164), (10, 2019787082), (20, 1009893541), (31, 651544220), (62, 325772110), (124, 162886055), (131, 154182220), (149, 135556180), (155, 130308844), (262, 77091110), (298, 67778090), (310, 65154422), (524, 38545555), (596, 33889045), (620, 32577211), (655, 30836444), (745, 27111236), (1310, 15418222), (1490, 13555618), (1669, 12101780), (2620, 7709111), (2980, 6777809), (3338, 6050890), (4061, 4973620), (4619, 4372780), (6676, 3025445), (8122, 2486810), (8345, 2420356), (9238, 2186390), (16244, 1243405), (16690, 1210178), (18476, 1093195), (19519, 1034780), (20305, 994724), (23095, 874556), (33380, 605089), (39038, 517390), (40610, 497362), (46190, 437278), (51739, 390380), (78076, 258695), (81220, 248681), (92380, 218639), (97595, 206956), (103478, 195190)]