20870135

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 31564512

約数和(自身を除く): 10694377

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 101, 143, 187, 221, 289, 505, 715, 935, 1105, 1111, 1313, 1445, 1717, 2431, 3179, 3757, 5555, 6565, 8585, 12155, 14443, 15895, 18785, 18887, 22321, 29189, 41327, 72215, 94435, 111605, 145945, 206635, 245531, 321079, 379457, 1227655, 1605395, 1897285, 4174027, 20870135]

約数ペア:

[(1, 20870135), (5, 4174027), (11, 1897285), (13, 1605395), (17, 1227655), (55, 379457), (65, 321079), (85, 245531), (101, 206635), (143, 145945), (187, 111605), (221, 94435), (289, 72215), (505, 41327), (715, 29189), (935, 22321), (1105, 18887), (1111, 18785), (1313, 15895), (1445, 14443), (1717, 12155), (2431, 8585), (3179, 6565), (3757, 5555)]