20453785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 30260160

約数和(自身を除く): 9806375

約数列:

[1, 5, 11, 19, 23, 37, 55, 95, 115, 185, 209, 253, 407, 437, 529, 703, 851, 1045, 1265, 2035, 2185, 2645, 3515, 4255, 4807, 5819, 7733, 9361, 10051, 16169, 19573, 24035, 29095, 38665, 46805, 50255, 80845, 97865, 110561, 177859, 215303, 371887, 552805, 889295, 1076515, 1859435, 4090757, 20453785]

約数ペア:

[(1, 20453785), (5, 4090757), (11, 1859435), (19, 1076515), (23, 889295), (37, 552805), (55, 371887), (95, 215303), (115, 177859), (185, 110561), (209, 97865), (253, 80845), (407, 50255), (437, 46805), (529, 38665), (703, 29095), (851, 24035), (1045, 19573), (1265, 16169), (2035, 10051), (2185, 9361), (2645, 7733), (3515, 5819), (4255, 4807)]