21818655

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6829}}^1$

素因数の和:6911

約数の個数: 24

約数和(自身を含む): 38357280

約数和(自身を除く): 16538625

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6829, 20487, 34145, 61461, 102435, 307305, 484859, 1454577, 2424295, 4363731, 7272885, 21818655]

約数ペア:

[(1, 21818655), (3, 7272885), (5, 4363731), (9, 2424295), (15, 1454577), (45, 484859), (71, 307305), (213, 102435), (355, 61461), (639, 34145), (1065, 20487), (3195, 6829)]