18404980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{311}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 24051980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 269, 311, 538, 622, 1076, 1244, 1345, 1555, 2690, 2959, 3110, 3421, 5380, 5918, 6220, 6842, 11836, 13684, 14795, 17105, 29590, 34210, 59180, 68420, 83659, 167318, 334636, 418295, 836590, 920249, 1673180, 1840498, 3680996, 4601245, 9202490, 18404980]

約数ペア:

[(1, 18404980), (2, 9202490), (4, 4601245), (5, 3680996), (10, 1840498), (11, 1673180), (20, 920249), (22, 836590), (44, 418295), (55, 334636), (110, 167318), (220, 83659), (269, 68420), (311, 59180), (538, 34210), (622, 29590), (1076, 17105), (1244, 14795), (1345, 13684), (1555, 11836), (2690, 6842), (2959, 6220), (3110, 5918), (3421, 5380)]