21781512

素因数分解:

$2^3\times 3^2\times {\mathrm{353}}^1\times {\mathrm{857}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 59227740

約数和(自身を除く): 37446228

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 353, 706, 857, 1059, 1412, 1714, 2118, 2571, 2824, 3177, 3428, 4236, 5142, 6354, 6856, 7713, 8472, 10284, 12708, 15426, 20568, 25416, 30852, 61704, 302521, 605042, 907563, 1210084, 1815126, 2420168, 2722689, 3630252, 5445378, 7260504, 10890756, 21781512]

約数ペア:

[(1, 21781512), (2, 10890756), (3, 7260504), (4, 5445378), (6, 3630252), (8, 2722689), (9, 2420168), (12, 1815126), (18, 1210084), (24, 907563), (36, 605042), (72, 302521), (353, 61704), (706, 30852), (857, 25416), (1059, 20568), (1412, 15426), (1714, 12708), (2118, 10284), (2571, 8472), (2824, 7713), (3177, 6856), (3428, 6354), (4236, 5142)]