18721528

素因数分解:

$2^3\times 7^2\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 41224680

約数和(自身を除く): 22503152

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 163, 196, 293, 326, 392, 586, 652, 1141, 1172, 1304, 2051, 2282, 2344, 4102, 4564, 7987, 8204, 9128, 14357, 15974, 16408, 28714, 31948, 47759, 57428, 63896, 95518, 114856, 191036, 334313, 382072, 668626, 1337252, 2340191, 2674504, 4680382, 9360764, 18721528]

約数ペア:

[(1, 18721528), (2, 9360764), (4, 4680382), (7, 2674504), (8, 2340191), (14, 1337252), (28, 668626), (49, 382072), (56, 334313), (98, 191036), (163, 114856), (196, 95518), (293, 63896), (326, 57428), (392, 47759), (586, 31948), (652, 28714), (1141, 16408), (1172, 15974), (1304, 14357), (2051, 9128), (2282, 8204), (2344, 7987), (4102, 4564)]