15309775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{163}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 21851032

約数和(自身を除く): 6541257

約数列:

[1, 5, 13, 17, 25, 65, 85, 163, 221, 289, 325, 425, 815, 1105, 1445, 2119, 2771, 3757, 4075, 5525, 7225, 10595, 13855, 18785, 36023, 47107, 52975, 69275, 93925, 180115, 235535, 612391, 900575, 1177675, 3061955, 15309775]

約数ペア:

[(1, 15309775), (5, 3061955), (13, 1177675), (17, 900575), (25, 612391), (65, 235535), (85, 180115), (163, 93925), (221, 69275), (289, 52975), (325, 47107), (425, 36023), (815, 18785), (1105, 13855), (1445, 10595), (2119, 7225), (2771, 5525), (3757, 4075)]