75996980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 163658880

約数和(自身を除く): 87661900

約数列:

[1, 2, 4, 5, 10, 20, 71, 109, 142, 218, 284, 355, 436, 491, 545, 710, 982, 1090, 1420, 1964, 2180, 2455, 4910, 7739, 9820, 15478, 30956, 34861, 38695, 53519, 69722, 77390, 107038, 139444, 154780, 174305, 214076, 267595, 348610, 535190, 697220, 1070380, 3799849, 7599698, 15199396, 18999245, 37998490, 75996980]

約数ペア:

[(1, 75996980), (2, 37998490), (4, 18999245), (5, 15199396), (10, 7599698), (20, 3799849), (71, 1070380), (109, 697220), (142, 535190), (218, 348610), (284, 267595), (355, 214076), (436, 174305), (491, 154780), (545, 139444), (710, 107038), (982, 77390), (1090, 69722), (1420, 53519), (1964, 38695), (2180, 34861), (2455, 30956), (4910, 15478), (7739, 9820)]