21268920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{421}}^2$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 63958680

約数和(自身を除く): 42689760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 421, 842, 1263, 1684, 2105, 2526, 3368, 4210, 5052, 6315, 8420, 10104, 12630, 16840, 25260, 50520, 177241, 354482, 531723, 708964, 886205, 1063446, 1417928, 1772410, 2126892, 2658615, 3544820, 4253784, 5317230, 7089640, 10634460, 21268920]

約数ペア:

[(1, 21268920), (2, 10634460), (3, 7089640), (4, 5317230), (5, 4253784), (6, 3544820), (8, 2658615), (10, 2126892), (12, 1772410), (15, 1417928), (20, 1063446), (24, 886205), (30, 708964), (40, 531723), (60, 354482), (120, 177241), (421, 50520), (842, 25260), (1263, 16840), (1684, 12630), (2105, 10104), (2526, 8420), (3368, 6315), (4210, 5052)]