21620830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{653}}^1$

素因数の和:721

約数の個数: 64

約数和(自身を含む): 49724928

約数和(自身を除く): 28104098

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 70, 77, 86, 110, 154, 215, 301, 385, 430, 473, 602, 653, 770, 946, 1306, 1505, 2365, 3010, 3265, 3311, 4571, 4730, 6530, 6622, 7183, 9142, 14366, 16555, 22855, 28079, 33110, 35915, 45710, 50281, 56158, 71830, 100562, 140395, 196553, 251405, 280790, 308869, 393106, 502810, 617738, 982765, 1544345, 1965530, 2162083, 3088690, 4324166, 10810415, 21620830]

約数ペア:

[(1, 21620830), (2, 10810415), (5, 4324166), (7, 3088690), (10, 2162083), (11, 1965530), (14, 1544345), (22, 982765), (35, 617738), (43, 502810), (55, 393106), (70, 308869), (77, 280790), (86, 251405), (110, 196553), (154, 140395), (215, 100562), (301, 71830), (385, 56158), (430, 50281), (473, 45710), (602, 35915), (653, 33110), (770, 28079), (946, 22855), (1306, 16555), (1505, 14366), (2365, 9142), (3010, 7183), (3265, 6622), (3311, 6530), (4571, 4730)]