81012100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{617}}^1$

素因数の和:745

約数の個数: 72

約数和(自身を含む): 191503368

約数和(自身を除く): 110491268

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 101, 130, 202, 260, 325, 404, 505, 617, 650, 1010, 1234, 1300, 1313, 2020, 2468, 2525, 2626, 3085, 5050, 5252, 6170, 6565, 8021, 10100, 12340, 13130, 15425, 16042, 26260, 30850, 32084, 32825, 40105, 61700, 62317, 65650, 80210, 124634, 131300, 160420, 200525, 249268, 311585, 401050, 623170, 802100, 810121, 1246340, 1557925, 1620242, 3115850, 3240484, 4050605, 6231700, 8101210, 16202420, 20253025, 40506050, 81012100]

約数ペア:

[(1, 81012100), (2, 40506050), (4, 20253025), (5, 16202420), (10, 8101210), (13, 6231700), (20, 4050605), (25, 3240484), (26, 3115850), (50, 1620242), (52, 1557925), (65, 1246340), (100, 810121), (101, 802100), (130, 623170), (202, 401050), (260, 311585), (325, 249268), (404, 200525), (505, 160420), (617, 131300), (650, 124634), (1010, 80210), (1234, 65650), (1300, 62317), (1313, 61700), (2020, 40105), (2468, 32825), (2525, 32084), (2626, 30850), (3085, 26260), (5050, 16042), (5252, 15425), (6170, 13130), (6565, 12340), (8021, 10100)]