20281920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:628

約数の個数: 112

約数和(自身を含む): 66251328

約数和(自身を除く): 45969408

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 37, 40, 48, 60, 64, 74, 80, 96, 111, 120, 148, 160, 185, 192, 222, 240, 296, 320, 370, 444, 480, 555, 571, 592, 740, 888, 960, 1110, 1142, 1184, 1480, 1713, 1776, 2220, 2284, 2368, 2855, 2960, 3426, 3552, 4440, 4568, 5710, 5920, 6852, 7104, 8565, 8880, 9136, 11420, 11840, 13704, 17130, 17760, 18272, 21127, 22840, 27408, 34260, 35520, 36544, 42254, 45680, 54816, 63381, 68520, 84508, 91360, 105635, 109632, 126762, 137040, 169016, 182720, 211270, 253524, 274080, 316905, 338032, 422540, 507048, 548160, 633810, 676064, 845080, 1014096, 1267620, 1352128, 1690160, 2028192, 2535240, 3380320, 4056384, 5070480, 6760640, 10140960, 20281920]

約数ペア:

[(1, 20281920), (2, 10140960), (3, 6760640), (4, 5070480), (5, 4056384), (6, 3380320), (8, 2535240), (10, 2028192), (12, 1690160), (15, 1352128), (16, 1267620), (20, 1014096), (24, 845080), (30, 676064), (32, 633810), (37, 548160), (40, 507048), (48, 422540), (60, 338032), (64, 316905), (74, 274080), (80, 253524), (96, 211270), (111, 182720), (120, 169016), (148, 137040), (160, 126762), (185, 109632), (192, 105635), (222, 91360), (240, 84508), (296, 68520), (320, 63381), (370, 54816), (444, 45680), (480, 42254), (555, 36544), (571, 35520), (592, 34260), (740, 27408), (888, 22840), (960, 21127), (1110, 18272), (1142, 17760), (1184, 17130), (1480, 13704), (1713, 11840), (1776, 11420), (2220, 9136), (2284, 8880), (2368, 8565), (2855, 7104), (2960, 6852), (3426, 5920), (3552, 5710), (4440, 4568)]