20676760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2339}}^1$

素因数の和:2380

約数の個数: 64

約数和(自身を含む): 53071200

約数和(自身を除く): 32394440

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, 2210, 2339, 4420, 4678, 8840, 9356, 11695, 18712, 23390, 30407, 39763, 46780, 60814, 79526, 93560, 121628, 152035, 159052, 198815, 243256, 304070, 318104, 397630, 516919, 608140, 795260, 1033838, 1216280, 1590520, 2067676, 2584595, 4135352, 5169190, 10338380, 20676760]

約数ペア:

[(1, 20676760), (2, 10338380), (4, 5169190), (5, 4135352), (8, 2584595), (10, 2067676), (13, 1590520), (17, 1216280), (20, 1033838), (26, 795260), (34, 608140), (40, 516919), (52, 397630), (65, 318104), (68, 304070), (85, 243256), (104, 198815), (130, 159052), (136, 152035), (170, 121628), (221, 93560), (260, 79526), (340, 60814), (442, 46780), (520, 39763), (680, 30407), (884, 23390), (1105, 18712), (1768, 11695), (2210, 9356), (2339, 8840), (4420, 4678)]