388407680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19577}}^1$

素因数の和:19627

約数の個数: 64

約数和(自身を含む): 958538880

約数和(自身を除く): 570131200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19577, 19840, 39154, 78308, 97885, 156616, 195770, 313232, 391540, 606887, 626464, 783080, 1213774, 1252928, 1566160, 2427548, 2505856, 3034435, 3132320, 4855096, 6068870, 6264640, 9710192, 12137740, 12529280, 19420384, 24275480, 38840768, 48550960, 77681536, 97101920, 194203840, 388407680]

約数ペア:

[(1, 388407680), (2, 194203840), (4, 97101920), (5, 77681536), (8, 48550960), (10, 38840768), (16, 24275480), (20, 19420384), (31, 12529280), (32, 12137740), (40, 9710192), (62, 6264640), (64, 6068870), (80, 4855096), (124, 3132320), (128, 3034435), (155, 2505856), (160, 2427548), (248, 1566160), (310, 1252928), (320, 1213774), (496, 783080), (620, 626464), (640, 606887), (992, 391540), (1240, 313232), (1984, 195770), (2480, 156616), (3968, 97885), (4960, 78308), (9920, 39154), (19577, 19840)]