21851340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52027}}^1$

素因数の和:52046

約数の個数: 48

約数和(自身を含む): 69925632

約数和(自身を除く): 48074292

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 52027, 104054, 156081, 208108, 260135, 312162, 364189, 520270, 624324, 728378, 780405, 1040540, 1092567, 1456756, 1560810, 1820945, 2185134, 3121620, 3641890, 4370268, 5462835, 7283780, 10925670, 21851340]

約数ペア:

[(1, 21851340), (2, 10925670), (3, 7283780), (4, 5462835), (5, 4370268), (6, 3641890), (7, 3121620), (10, 2185134), (12, 1820945), (14, 1560810), (15, 1456756), (20, 1092567), (21, 1040540), (28, 780405), (30, 728378), (35, 624324), (42, 520270), (60, 364189), (70, 312162), (84, 260135), (105, 208108), (140, 156081), (210, 104054), (420, 52027)]