28521740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{673}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 64995168

約数和(自身を除く): 36473428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 652, 673, 815, 1346, 1630, 2119, 2692, 3260, 3365, 4238, 6730, 8476, 8749, 10595, 13460, 17498, 21190, 34996, 42380, 43745, 87490, 109699, 174980, 219398, 438796, 548495, 1096990, 1426087, 2193980, 2852174, 5704348, 7130435, 14260870, 28521740]

約数ペア:

[(1, 28521740), (2, 14260870), (4, 7130435), (5, 5704348), (10, 2852174), (13, 2193980), (20, 1426087), (26, 1096990), (52, 548495), (65, 438796), (130, 219398), (163, 174980), (260, 109699), (326, 87490), (652, 43745), (673, 42380), (815, 34996), (1346, 21190), (1630, 17498), (2119, 13460), (2692, 10595), (3260, 8749), (3365, 8476), (4238, 6730)]