68631980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{491}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 150020640

約数和(自身を除く): 81388660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 241, 290, 482, 491, 580, 964, 982, 1205, 1964, 2410, 2455, 4820, 4910, 6989, 9820, 13978, 14239, 27956, 28478, 34945, 56956, 69890, 71195, 118331, 139780, 142390, 236662, 284780, 473324, 591655, 1183310, 2366620, 3431599, 6863198, 13726396, 17157995, 34315990, 68631980]

約数ペア:

[(1, 68631980), (2, 34315990), (4, 17157995), (5, 13726396), (10, 6863198), (20, 3431599), (29, 2366620), (58, 1183310), (116, 591655), (145, 473324), (241, 284780), (290, 236662), (482, 142390), (491, 139780), (580, 118331), (964, 71195), (982, 69890), (1205, 56956), (1964, 34945), (2410, 28478), (2455, 27956), (4820, 14239), (4910, 13978), (6989, 9820)]