21155888901

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2749}}^1\times {\mathrm{21557}}^1$

素因数の和:24333

約数の個数: 32

約数和(自身を含む): 34147872000

約数和(自身を除く): 12991983099

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 2749, 8247, 19243, 21557, 46733, 57729, 64671, 140199, 150899, 327131, 366469, 452697, 981393, 1099407, 2565283, 7695849, 59260193, 177780579, 414821351, 1007423281, 1244464053, 3022269843, 7051962967, 21155888901]

約数ペア:

[(1, 21155888901), (3, 7051962967), (7, 3022269843), (17, 1244464053), (21, 1007423281), (51, 414821351), (119, 177780579), (357, 59260193), (2749, 7695849), (8247, 2565283), (19243, 1099407), (21557, 981393), (46733, 452697), (57729, 366469), (64671, 327131), (140199, 150899)]