219665680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211217}}^1$

素因数の和:211243

約数の個数: 40

約数和(自身を含む): 550011672

約数和(自身を除く): 330345992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211217, 422434, 844868, 1056085, 1689736, 2112170, 2745821, 3379472, 4224340, 5491642, 8448680, 10983284, 13729105, 16897360, 21966568, 27458210, 43933136, 54916420, 109832840, 219665680]

約数ペア:

[(1, 219665680), (2, 109832840), (4, 54916420), (5, 43933136), (8, 27458210), (10, 21966568), (13, 16897360), (16, 13729105), (20, 10983284), (26, 8448680), (40, 5491642), (52, 4224340), (65, 3379472), (80, 2745821), (104, 2112170), (130, 1689736), (208, 1056085), (260, 844868), (520, 422434), (1040, 211217)]