20857620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{937}}^1$

素因数の和:1009

約数の個数: 96

約数和(自身を含む): 68076288

約数和(自身を除く): 47218668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 84, 105, 106, 140, 159, 210, 212, 265, 318, 371, 420, 530, 636, 742, 795, 937, 1060, 1113, 1484, 1590, 1855, 1874, 2226, 2811, 3180, 3710, 3748, 4452, 4685, 5565, 5622, 6559, 7420, 9370, 11130, 11244, 13118, 14055, 18740, 19677, 22260, 26236, 28110, 32795, 39354, 49661, 56220, 65590, 78708, 98385, 99322, 131180, 148983, 196770, 198644, 248305, 297966, 347627, 393540, 496610, 595932, 695254, 744915, 993220, 1042881, 1390508, 1489830, 1738135, 2085762, 2979660, 3476270, 4171524, 5214405, 6952540, 10428810, 20857620]

約数ペア:

[(1, 20857620), (2, 10428810), (3, 6952540), (4, 5214405), (5, 4171524), (6, 3476270), (7, 2979660), (10, 2085762), (12, 1738135), (14, 1489830), (15, 1390508), (20, 1042881), (21, 993220), (28, 744915), (30, 695254), (35, 595932), (42, 496610), (53, 393540), (60, 347627), (70, 297966), (84, 248305), (105, 198644), (106, 196770), (140, 148983), (159, 131180), (210, 99322), (212, 98385), (265, 78708), (318, 65590), (371, 56220), (420, 49661), (530, 39354), (636, 32795), (742, 28110), (795, 26236), (937, 22260), (1060, 19677), (1113, 18740), (1484, 14055), (1590, 13118), (1855, 11244), (1874, 11130), (2226, 9370), (2811, 7420), (3180, 6559), (3710, 5622), (3748, 5565), (4452, 4685)]