19408675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 29060640

約数和(自身を除く): 9651965

約数列:

[1, 5, 11, 13, 25, 55, 61, 65, 89, 143, 275, 305, 325, 445, 671, 715, 793, 979, 1157, 1525, 2225, 3355, 3575, 3965, 4895, 5429, 5785, 8723, 12727, 16775, 19825, 24475, 27145, 28925, 43615, 59719, 63635, 70577, 135725, 218075, 298595, 318175, 352885, 776347, 1492975, 1764425, 3881735, 19408675]

約数ペア:

[(1, 19408675), (5, 3881735), (11, 1764425), (13, 1492975), (25, 776347), (55, 352885), (61, 318175), (65, 298595), (89, 218075), (143, 135725), (275, 70577), (305, 63635), (325, 59719), (445, 43615), (671, 28925), (715, 27145), (793, 24475), (979, 19825), (1157, 16775), (1525, 12727), (2225, 8723), (3355, 5785), (3575, 5429), (3965, 4895)]