391324160

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4931}}^1$

素因数の和:4985

約数の個数: 80

約数和(自身を含む): 968723712

約数和(自身を除く): 577399552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4931, 4960, 7936, 9862, 9920, 15872, 19724, 19840, 24655, 39448, 39680, 49310, 78896, 79360, 98620, 152861, 157792, 197240, 305722, 315584, 394480, 611444, 631168, 764305, 788960, 1222888, 1262336, 1528610, 1577920, 2445776, 2524672, 3057220, 3155840, 4891552, 6114440, 6311680, 9783104, 12228880, 12623360, 19566208, 24457760, 39132416, 48915520, 78264832, 97831040, 195662080, 391324160]

約数ペア:

[(1, 391324160), (2, 195662080), (4, 97831040), (5, 78264832), (8, 48915520), (10, 39132416), (16, 24457760), (20, 19566208), (31, 12623360), (32, 12228880), (40, 9783104), (62, 6311680), (64, 6114440), (80, 4891552), (124, 3155840), (128, 3057220), (155, 2524672), (160, 2445776), (248, 1577920), (256, 1528610), (310, 1262336), (320, 1222888), (496, 788960), (512, 764305), (620, 631168), (640, 611444), (992, 394480), (1240, 315584), (1280, 305722), (1984, 197240), (2480, 157792), (2560, 152861), (3968, 98620), (4931, 79360), (4960, 78896), (7936, 49310), (9862, 39680), (9920, 39448), (15872, 24655), (19724, 19840)]