18886660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4273}}^1$

素因数の和:4312

約数の個数: 48

約数和(自身を含む): 45236016

約数和(自身を除く): 26349356

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4273, 4420, 8546, 17092, 21365, 42730, 55549, 72641, 85460, 111098, 145282, 222196, 277745, 290564, 363205, 555490, 726410, 944333, 1110980, 1452820, 1888666, 3777332, 4721665, 9443330, 18886660]

約数ペア:

[(1, 18886660), (2, 9443330), (4, 4721665), (5, 3777332), (10, 1888666), (13, 1452820), (17, 1110980), (20, 944333), (26, 726410), (34, 555490), (52, 363205), (65, 290564), (68, 277745), (85, 222196), (130, 145282), (170, 111098), (221, 85460), (260, 72641), (340, 55549), (442, 42730), (884, 21365), (1105, 17092), (2210, 8546), (4273, 4420)]