21881520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{30391}}^1$

素因数の和:30410

約数の個数: 60

約数和(自身を含む): 73487856

約数和(自身を除く): 51606336

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 30391, 60782, 91173, 121564, 151955, 182346, 243128, 273519, 303910, 364692, 455865, 486256, 547038, 607820, 729384, 911730, 1094076, 1215640, 1367595, 1458768, 1823460, 2188152, 2431280, 2735190, 3646920, 4376304, 5470380, 7293840, 10940760, 21881520]

約数ペア:

[(1, 21881520), (2, 10940760), (3, 7293840), (4, 5470380), (5, 4376304), (6, 3646920), (8, 2735190), (9, 2431280), (10, 2188152), (12, 1823460), (15, 1458768), (16, 1367595), (18, 1215640), (20, 1094076), (24, 911730), (30, 729384), (36, 607820), (40, 547038), (45, 486256), (48, 455865), (60, 364692), (72, 303910), (80, 273519), (90, 243128), (120, 182346), (144, 151955), (180, 121564), (240, 91173), (360, 60782), (720, 30391)]