21780930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2699}}^1$

素因数の和:2978

約数の個数: 32

約数和(自身を含む): 52488000

約数和(自身を除く): 30707070

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 269, 538, 807, 1345, 1614, 2690, 2699, 4035, 5398, 8070, 8097, 13495, 16194, 26990, 40485, 80970, 726031, 1452062, 2178093, 3630155, 4356186, 7260310, 10890465, 21780930]

約数ペア:

[(1, 21780930), (2, 10890465), (3, 7260310), (5, 4356186), (6, 3630155), (10, 2178093), (15, 1452062), (30, 726031), (269, 80970), (538, 40485), (807, 26990), (1345, 16194), (1614, 13495), (2690, 8097), (2699, 8070), (4035, 5398)]