248853507

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 409852800

約数和(自身を除く): 160999293

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 139, 147, 399, 417, 641, 931, 973, 1923, 2641, 2793, 2919, 4487, 6811, 7923, 12179, 13461, 18487, 20433, 31409, 36537, 55461, 85253, 89099, 94227, 129409, 255759, 267297, 388227, 596771, 623693, 1692881, 1790313, 1871079, 4365851, 5078643, 11850167, 13097553, 35550501, 82951169, 248853507]

約数ペア:

[(1, 248853507), (3, 82951169), (7, 35550501), (19, 13097553), (21, 11850167), (49, 5078643), (57, 4365851), (133, 1871079), (139, 1790313), (147, 1692881), (399, 623693), (417, 596771), (641, 388227), (931, 267297), (973, 255759), (1923, 129409), (2641, 94227), (2793, 89099), (2919, 85253), (4487, 55461), (6811, 36537), (7923, 31409), (12179, 20433), (13461, 18487)]