21740580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{449}}^1$

素因数の和:733

約数の個数: 72

約数和(自身を含む): 66339000

約数和(自身を除く): 44598420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 269, 449, 538, 807, 898, 1076, 1345, 1347, 1614, 1796, 2245, 2421, 2690, 2694, 3228, 4035, 4041, 4490, 4842, 5380, 5388, 6735, 8070, 8082, 8980, 9684, 12105, 13470, 16140, 16164, 20205, 24210, 26940, 40410, 48420, 80820, 120781, 241562, 362343, 483124, 603905, 724686, 1087029, 1207810, 1449372, 1811715, 2174058, 2415620, 3623430, 4348116, 5435145, 7246860, 10870290, 21740580]

約数ペア:

[(1, 21740580), (2, 10870290), (3, 7246860), (4, 5435145), (5, 4348116), (6, 3623430), (9, 2415620), (10, 2174058), (12, 1811715), (15, 1449372), (18, 1207810), (20, 1087029), (30, 724686), (36, 603905), (45, 483124), (60, 362343), (90, 241562), (180, 120781), (269, 80820), (449, 48420), (538, 40410), (807, 26940), (898, 24210), (1076, 20205), (1345, 16164), (1347, 16140), (1614, 13470), (1796, 12105), (2245, 9684), (2421, 8980), (2690, 8082), (2694, 8070), (3228, 6735), (4035, 5388), (4041, 5380), (4490, 4842)]