393878740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{7457}}^1$

素因数の和:7624

約数の個数: 48

約数和(自身を含む): 877060800

約数和(自身を除く): 483182060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 5282, 7457, 10564, 13205, 14914, 26410, 29828, 37285, 52820, 74570, 141683, 149140, 283366, 566732, 708415, 1036523, 1416830, 2073046, 2833660, 4146092, 5182615, 10365230, 19693937, 20730460, 39387874, 78775748, 98469685, 196939370, 393878740]

約数ペア:

[(1, 393878740), (2, 196939370), (4, 98469685), (5, 78775748), (10, 39387874), (19, 20730460), (20, 19693937), (38, 10365230), (76, 5182615), (95, 4146092), (139, 2833660), (190, 2073046), (278, 1416830), (380, 1036523), (556, 708415), (695, 566732), (1390, 283366), (2641, 149140), (2780, 141683), (5282, 74570), (7457, 52820), (10564, 37285), (13205, 29828), (14914, 26410)]