20488440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24391}}^1$

素因数の和:24412

約数の個数: 64

約数和(自身を含む): 70248960

約数和(自身を除く): 49760520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24391, 48782, 73173, 97564, 121955, 146346, 170737, 195128, 243910, 292692, 341474, 365865, 487820, 512211, 585384, 682948, 731730, 853685, 975640, 1024422, 1365896, 1463460, 1707370, 2048844, 2561055, 2926920, 3414740, 4097688, 5122110, 6829480, 10244220, 20488440]

約数ペア:

[(1, 20488440), (2, 10244220), (3, 6829480), (4, 5122110), (5, 4097688), (6, 3414740), (7, 2926920), (8, 2561055), (10, 2048844), (12, 1707370), (14, 1463460), (15, 1365896), (20, 1024422), (21, 975640), (24, 853685), (28, 731730), (30, 682948), (35, 585384), (40, 512211), (42, 487820), (56, 365865), (60, 341474), (70, 292692), (84, 243910), (105, 195128), (120, 170737), (140, 146346), (168, 121955), (210, 97564), (280, 73173), (420, 48782), (840, 24391)]