21975240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{26161}}^1$

素因数の和:26182

約数の個数: 64

約数和(自身を含む): 75346560

約数和(自身を除く): 53371320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 26161, 52322, 78483, 104644, 130805, 156966, 183127, 209288, 261610, 313932, 366254, 392415, 523220, 549381, 627864, 732508, 784830, 915635, 1046440, 1098762, 1465016, 1569660, 1831270, 2197524, 2746905, 3139320, 3662540, 4395048, 5493810, 7325080, 10987620, 21975240]

約数ペア:

[(1, 21975240), (2, 10987620), (3, 7325080), (4, 5493810), (5, 4395048), (6, 3662540), (7, 3139320), (8, 2746905), (10, 2197524), (12, 1831270), (14, 1569660), (15, 1465016), (20, 1098762), (21, 1046440), (24, 915635), (28, 784830), (30, 732508), (35, 627864), (40, 549381), (42, 523220), (56, 392415), (60, 366254), (70, 313932), (84, 261610), (105, 209288), (120, 183127), (140, 156966), (168, 130805), (210, 104644), (280, 78483), (420, 52322), (840, 26161)]