21516240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2423}}^1$

素因数の和:2476

約数の個数: 80

約数和(自身を含む): 68531328

約数和(自身を除く): 47015088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2423, 2960, 4440, 4846, 7269, 8880, 9692, 12115, 14538, 19384, 24230, 29076, 36345, 38768, 48460, 58152, 72690, 89651, 96920, 116304, 145380, 179302, 193840, 268953, 290760, 358604, 448255, 537906, 581520, 717208, 896510, 1075812, 1344765, 1434416, 1793020, 2151624, 2689530, 3586040, 4303248, 5379060, 7172080, 10758120, 21516240]

約数ペア:

[(1, 21516240), (2, 10758120), (3, 7172080), (4, 5379060), (5, 4303248), (6, 3586040), (8, 2689530), (10, 2151624), (12, 1793020), (15, 1434416), (16, 1344765), (20, 1075812), (24, 896510), (30, 717208), (37, 581520), (40, 537906), (48, 448255), (60, 358604), (74, 290760), (80, 268953), (111, 193840), (120, 179302), (148, 145380), (185, 116304), (222, 96920), (240, 89651), (296, 72690), (370, 58152), (444, 48460), (555, 38768), (592, 36345), (740, 29076), (888, 24230), (1110, 19384), (1480, 14538), (1776, 12115), (2220, 9692), (2423, 8880), (2960, 7269), (4440, 4846)]