204768640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{10321}}^1$

素因数の和:10371

約数の個数: 64

約数和(自身を含む): 505365120

約数和(自身を除く): 300596480

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, 10321, 19840, 20642, 41284, 51605, 82568, 103210, 165136, 206420, 319951, 330272, 412840, 639902, 660544, 825680, 1279804, 1321088, 1599755, 1651360, 2559608, 3199510, 3302720, 5119216, 6399020, 6605440, 10238432, 12798040, 20476864, 25596080, 40953728, 51192160, 102384320, 204768640]

約数ペア:

[(1, 204768640), (2, 102384320), (4, 51192160), (5, 40953728), (8, 25596080), (10, 20476864), (16, 12798040), (20, 10238432), (31, 6605440), (32, 6399020), (40, 5119216), (62, 3302720), (64, 3199510), (80, 2559608), (124, 1651360), (128, 1599755), (155, 1321088), (160, 1279804), (248, 825680), (310, 660544), (320, 639902), (496, 412840), (620, 330272), (640, 319951), (992, 206420), (1240, 165136), (1984, 103210), (2480, 82568), (3968, 51605), (4960, 41284), (9920, 20642), (10321, 19840)]