20953515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{151}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 38128896

約数和(自身を除く): 17175381

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 151, 165, 319, 435, 453, 755, 841, 957, 1595, 1661, 2265, 2523, 4205, 4379, 4785, 4983, 8305, 9251, 12615, 13137, 21895, 24915, 27753, 46255, 48169, 65685, 126991, 138765, 144507, 240845, 380973, 634955, 722535, 1396901, 1904865, 4190703, 6984505, 20953515]

約数ペア:

[(1, 20953515), (3, 6984505), (5, 4190703), (11, 1904865), (15, 1396901), (29, 722535), (33, 634955), (55, 380973), (87, 240845), (145, 144507), (151, 138765), (165, 126991), (319, 65685), (435, 48169), (453, 46255), (755, 27753), (841, 24915), (957, 21895), (1595, 13137), (1661, 12615), (2265, 9251), (2523, 8305), (4205, 4983), (4379, 4785)]