18809180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{991}}^1$

素因数の和:1086

約数の個数: 48

約数和(自身を含む): 43163904

約数和(自身を除く): 24354724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 991, 1460, 1898, 1982, 3796, 3964, 4745, 4955, 9490, 9910, 12883, 18980, 19820, 25766, 51532, 64415, 72343, 128830, 144686, 257660, 289372, 361715, 723430, 940459, 1446860, 1880918, 3761836, 4702295, 9404590, 18809180]

約数ペア:

[(1, 18809180), (2, 9404590), (4, 4702295), (5, 3761836), (10, 1880918), (13, 1446860), (20, 940459), (26, 723430), (52, 361715), (65, 289372), (73, 257660), (130, 144686), (146, 128830), (260, 72343), (292, 64415), (365, 51532), (730, 25766), (949, 19820), (991, 18980), (1460, 12883), (1898, 9910), (1982, 9490), (3796, 4955), (3964, 4745)]