18957380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4289}}^1$

素因数の和:4328

約数の個数: 48

約数和(自身を含む): 45405360

約数和(自身を除く): 26447980

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4289, 4420, 8578, 17156, 21445, 42890, 55757, 72913, 85780, 111514, 145826, 223028, 278785, 291652, 364565, 557570, 729130, 947869, 1115140, 1458260, 1895738, 3791476, 4739345, 9478690, 18957380]

約数ペア:

[(1, 18957380), (2, 9478690), (4, 4739345), (5, 3791476), (10, 1895738), (13, 1458260), (17, 1115140), (20, 947869), (26, 729130), (34, 557570), (52, 364565), (65, 291652), (68, 278785), (85, 223028), (130, 145826), (170, 111514), (221, 85780), (260, 72913), (340, 55757), (442, 42890), (884, 21445), (1105, 17156), (2210, 8578), (4289, 4420)]