205121528

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{420331}}^1$

素因数の和:420398

約数の個数: 16

約数和(自身を含む): 390908760

約数和(自身を除く): 185787232

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 420331, 840662, 1681324, 3362648, 25640191, 51280382, 102560764, 205121528]

約数ペア:

[(1, 205121528), (2, 102560764), (4, 51280382), (8, 25640191), (61, 3362648), (122, 1681324), (244, 840662), (488, 420331)]