21000045

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{929}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 36961920

約数和(自身を除く): 15961875

約数列:

[1, 3, 5, 11, 15, 33, 55, 137, 165, 411, 685, 929, 1507, 2055, 2787, 4521, 4645, 7535, 10219, 13935, 22605, 30657, 51095, 127273, 153285, 381819, 636365, 1400003, 1909095, 4200009, 7000015, 21000045]

約数ペア:

[(1, 21000045), (3, 7000015), (5, 4200009), (11, 1909095), (15, 1400003), (33, 636365), (55, 381819), (137, 153285), (165, 127273), (411, 51095), (685, 30657), (929, 22605), (1507, 13935), (2055, 10219), (2787, 7535), (4521, 4645)]