405432980

素因数分解:

$2^2\times 5^1\times {\mathrm{2903}}^1\times {\mathrm{6983}}^1$

素因数の和:9895

約数の個数: 24

約数和(自身を含む): 851824512

約数和(自身を除く): 446391532

約数列:

[1, 2, 4, 5, 10, 20, 2903, 5806, 6983, 11612, 13966, 14515, 27932, 29030, 34915, 58060, 69830, 139660, 20271649, 40543298, 81086596, 101358245, 202716490, 405432980]

約数ペア:

[(1, 405432980), (2, 202716490), (4, 101358245), (5, 81086596), (10, 40543298), (20, 20271649), (2903, 139660), (5806, 69830), (6983, 58060), (11612, 34915), (13966, 29030), (14515, 27932)]