21144970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3923}}^1$

素因数の和:3955

約数の個数: 48

約数和(自身を含む): 48312288

約数和(自身を除く): 27167318

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3923, 5390, 7846, 19615, 27461, 39230, 43153, 54922, 86306, 137305, 192227, 215765, 274610, 302071, 384454, 431530, 604142, 961135, 1510355, 1922270, 2114497, 3020710, 4228994, 10572485, 21144970]

約数ペア:

[(1, 21144970), (2, 10572485), (5, 4228994), (7, 3020710), (10, 2114497), (11, 1922270), (14, 1510355), (22, 961135), (35, 604142), (49, 431530), (55, 384454), (70, 302071), (77, 274610), (98, 215765), (110, 192227), (154, 137305), (245, 86306), (385, 54922), (490, 43153), (539, 39230), (770, 27461), (1078, 19615), (2695, 7846), (3923, 5390)]