254214440

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{7741}}^1$

素因数の和:8573

約数の個数: 32

約数和(自身を含む): 572753160

約数和(自身を除く): 318538720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 4105, 6568, 7741, 8210, 15482, 16420, 30964, 32840, 38705, 61928, 77410, 154820, 309640, 6355361, 12710722, 25421444, 31776805, 50842888, 63553610, 127107220, 254214440]

約数ペア:

[(1, 254214440), (2, 127107220), (4, 63553610), (5, 50842888), (8, 31776805), (10, 25421444), (20, 12710722), (40, 6355361), (821, 309640), (1642, 154820), (3284, 77410), (4105, 61928), (6568, 38705), (7741, 32840), (8210, 30964), (15482, 16420)]