642255220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1396207}}^1$

素因数の和:1396239

約数の個数: 24

約数和(自身を含む): 1407377664

約数和(自身を除く): 765122444

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 1396207, 2792414, 5584828, 6981035, 13962070, 27924140, 32112761, 64225522, 128451044, 160563805, 321127610, 642255220]

約数ペア:

[(1, 642255220), (2, 321127610), (4, 160563805), (5, 128451044), (10, 64225522), (20, 32112761), (23, 27924140), (46, 13962070), (92, 6981035), (115, 5584828), (230, 2792414), (460, 1396207)]