19513340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12671}}^1$

素因数の和:12698

約数の個数: 48

約数和(自身を含む): 51093504

約数和(自身を除く): 31580164

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12671, 25342, 50684, 63355, 88697, 126710, 139381, 177394, 253420, 278762, 354788, 443485, 557524, 696905, 886970, 975667, 1393810, 1773940, 1951334, 2787620, 3902668, 4878335, 9756670, 19513340]

約数ペア:

[(1, 19513340), (2, 9756670), (4, 4878335), (5, 3902668), (7, 2787620), (10, 1951334), (11, 1773940), (14, 1393810), (20, 975667), (22, 886970), (28, 696905), (35, 557524), (44, 443485), (55, 354788), (70, 278762), (77, 253420), (110, 177394), (140, 139381), (154, 126710), (220, 88697), (308, 63355), (385, 50684), (770, 25342), (1540, 12671)]