20320380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1429}}^1$

素因数の和:1523

約数の個数: 72

約数和(自身を含む): 62462400

約数和(自身を除く): 42142020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1429, 1580, 2370, 2844, 2858, 3555, 4287, 4740, 5716, 7110, 7145, 8574, 12861, 14220, 14290, 17148, 21435, 25722, 28580, 42870, 51444, 64305, 85740, 112891, 128610, 225782, 257220, 338673, 451564, 564455, 677346, 1016019, 1128910, 1354692, 1693365, 2032038, 2257820, 3386730, 4064076, 5080095, 6773460, 10160190, 20320380]

約数ペア:

[(1, 20320380), (2, 10160190), (3, 6773460), (4, 5080095), (5, 4064076), (6, 3386730), (9, 2257820), (10, 2032038), (12, 1693365), (15, 1354692), (18, 1128910), (20, 1016019), (30, 677346), (36, 564455), (45, 451564), (60, 338673), (79, 257220), (90, 225782), (158, 128610), (180, 112891), (237, 85740), (316, 64305), (395, 51444), (474, 42870), (711, 28580), (790, 25722), (948, 21435), (1185, 17148), (1422, 14290), (1429, 14220), (1580, 12861), (2370, 8574), (2844, 7145), (2858, 7110), (3555, 5716), (4287, 4740)]