77389640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 181440000

約数和(自身を除く): 104050360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 139, 155, 248, 278, 310, 449, 556, 620, 695, 898, 1112, 1240, 1390, 1796, 2245, 2780, 3592, 4309, 4490, 5560, 8618, 8980, 13919, 17236, 17960, 21545, 27838, 34472, 43090, 55676, 62411, 69595, 86180, 111352, 124822, 139190, 172360, 249644, 278380, 312055, 499288, 556760, 624110, 1248220, 1934741, 2496440, 3869482, 7738964, 9673705, 15477928, 19347410, 38694820, 77389640]

約数ペア:

[(1, 77389640), (2, 38694820), (4, 19347410), (5, 15477928), (8, 9673705), (10, 7738964), (20, 3869482), (31, 2496440), (40, 1934741), (62, 1248220), (124, 624110), (139, 556760), (155, 499288), (248, 312055), (278, 278380), (310, 249644), (449, 172360), (556, 139190), (620, 124822), (695, 111352), (898, 86180), (1112, 69595), (1240, 62411), (1390, 55676), (1796, 43090), (2245, 34472), (2780, 27838), (3592, 21545), (4309, 17960), (4490, 17236), (5560, 13919), (8618, 8980)]