818744225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 1215130560

約数和(自身を除く): 396386335

約数列:

[1, 5, 13, 17, 23, 25, 65, 85, 115, 221, 289, 299, 325, 379, 391, 425, 575, 1105, 1445, 1495, 1895, 1955, 3757, 4927, 5083, 5525, 6443, 6647, 7225, 7475, 8717, 9475, 9775, 18785, 24635, 25415, 32215, 33235, 43585, 83759, 86411, 93925, 109531, 113321, 123175, 127075, 148189, 161075, 166175, 217925, 418795, 432055, 547655, 566605, 740945, 1423903, 1926457, 2093975, 2160275, 2519213, 2738275, 2833025, 3704725, 7119515, 9632285, 12596065, 32749769, 35597575, 48161425, 62980325, 163748845, 818744225]

約数ペア:

[(1, 818744225), (5, 163748845), (13, 62980325), (17, 48161425), (23, 35597575), (25, 32749769), (65, 12596065), (85, 9632285), (115, 7119515), (221, 3704725), (289, 2833025), (299, 2738275), (325, 2519213), (379, 2160275), (391, 2093975), (425, 1926457), (575, 1423903), (1105, 740945), (1445, 566605), (1495, 547655), (1895, 432055), (1955, 418795), (3757, 217925), (4927, 166175), (5083, 161075), (5525, 148189), (6443, 127075), (6647, 123175), (7225, 113321), (7475, 109531), (8717, 93925), (9475, 86411), (9775, 83759), (18785, 43585), (24635, 33235), (25415, 32215)]