77881100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{701}}^1$

素因数の和:827

約数の個数: 72

約数和(自身を含む): 186456816

約数和(自身を除く): 108575716

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 101, 110, 202, 220, 275, 404, 505, 550, 701, 1010, 1100, 1111, 1402, 2020, 2222, 2525, 2804, 3505, 4444, 5050, 5555, 7010, 7711, 10100, 11110, 14020, 15422, 17525, 22220, 27775, 30844, 35050, 38555, 55550, 70100, 70801, 77110, 111100, 141602, 154220, 192775, 283204, 354005, 385550, 708010, 771100, 778811, 1416020, 1557622, 1770025, 3115244, 3540050, 3894055, 7080100, 7788110, 15576220, 19470275, 38940550, 77881100]

約数ペア:

[(1, 77881100), (2, 38940550), (4, 19470275), (5, 15576220), (10, 7788110), (11, 7080100), (20, 3894055), (22, 3540050), (25, 3115244), (44, 1770025), (50, 1557622), (55, 1416020), (100, 778811), (101, 771100), (110, 708010), (202, 385550), (220, 354005), (275, 283204), (404, 192775), (505, 154220), (550, 141602), (701, 111100), (1010, 77110), (1100, 70801), (1111, 70100), (1402, 55550), (2020, 38555), (2222, 35050), (2525, 30844), (2804, 27775), (3505, 22220), (4444, 17525), (5050, 15422), (5555, 14020), (7010, 11110), (7711, 10100)]