18678920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2113}}^1$

素因数の和:2154

約数の個数: 64

約数和(自身を含む): 47945520

約数和(自身を除く): 29266600

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2113, 2210, 4226, 4420, 8452, 8840, 10565, 16904, 21130, 27469, 35921, 42260, 54938, 71842, 84520, 109876, 137345, 143684, 179605, 219752, 274690, 287368, 359210, 466973, 549380, 718420, 933946, 1098760, 1436840, 1867892, 2334865, 3735784, 4669730, 9339460, 18678920]

約数ペア:

[(1, 18678920), (2, 9339460), (4, 4669730), (5, 3735784), (8, 2334865), (10, 1867892), (13, 1436840), (17, 1098760), (20, 933946), (26, 718420), (34, 549380), (40, 466973), (52, 359210), (65, 287368), (68, 274690), (85, 219752), (104, 179605), (130, 143684), (136, 137345), (170, 109876), (221, 84520), (260, 71842), (340, 54938), (442, 42260), (520, 35921), (680, 27469), (884, 21130), (1105, 16904), (1768, 10565), (2113, 8840), (2210, 8452), (4226, 4420)]