64379320

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3823}}^1$

素因数の和:4255

約数の個数: 32

約数和(自身を含む): 145235520

約数和(自身を除く): 80856200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 3823, 4210, 7646, 8420, 15292, 16840, 19115, 30584, 38230, 76460, 152920, 1609483, 3218966, 6437932, 8047415, 12875864, 16094830, 32189660, 64379320]

約数ペア:

[(1, 64379320), (2, 32189660), (4, 16094830), (5, 12875864), (8, 8047415), (10, 6437932), (20, 3218966), (40, 1609483), (421, 152920), (842, 76460), (1684, 38230), (2105, 30584), (3368, 19115), (3823, 16840), (4210, 15292), (7646, 8420)]