20679240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{443}}^1$

素因数の和:846

約数の個数: 64

約数和(自身を含む): 62337600

約数和(自身を除く): 41658360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 389, 443, 778, 886, 1167, 1329, 1556, 1772, 1945, 2215, 2334, 2658, 3112, 3544, 3890, 4430, 4668, 5316, 5835, 6645, 7780, 8860, 9336, 10632, 11670, 13290, 15560, 17720, 23340, 26580, 46680, 53160, 172327, 344654, 516981, 689308, 861635, 1033962, 1378616, 1723270, 2067924, 2584905, 3446540, 4135848, 5169810, 6893080, 10339620, 20679240]

約数ペア:

[(1, 20679240), (2, 10339620), (3, 6893080), (4, 5169810), (5, 4135848), (6, 3446540), (8, 2584905), (10, 2067924), (12, 1723270), (15, 1378616), (20, 1033962), (24, 861635), (30, 689308), (40, 516981), (60, 344654), (120, 172327), (389, 53160), (443, 46680), (778, 26580), (886, 23340), (1167, 17720), (1329, 15560), (1556, 13290), (1772, 11670), (1945, 10632), (2215, 9336), (2334, 8860), (2658, 7780), (3112, 6645), (3544, 5835), (3890, 5316), (4430, 4668)]