20702972140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1877}}^1\times {\mathrm{13451}}^1$

素因数の和:15378

約数の個数: 48

約数和(自身を含む): 44563677984

約数和(自身を除く): 23860705844

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1877, 3754, 7508, 9385, 13451, 18770, 26902, 37540, 53804, 67255, 76957, 134510, 153914, 269020, 307828, 384785, 551491, 769570, 1102982, 1539140, 2205964, 2757455, 5514910, 11029820, 25247527, 50495054, 100990108, 126237635, 252475270, 504950540, 1035148607, 2070297214, 4140594428, 5175743035, 10351486070, 20702972140]

約数ペア:

[(1, 20702972140), (2, 10351486070), (4, 5175743035), (5, 4140594428), (10, 2070297214), (20, 1035148607), (41, 504950540), (82, 252475270), (164, 126237635), (205, 100990108), (410, 50495054), (820, 25247527), (1877, 11029820), (3754, 5514910), (7508, 2757455), (9385, 2205964), (13451, 1539140), (18770, 1102982), (26902, 769570), (37540, 551491), (53804, 384785), (67255, 307828), (76957, 269020), (134510, 153914)]