405456680

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{24077}}^1$

素因数の和:24509

約数の個数: 32

約数和(自身を含む): 914482440

約数和(自身を除く): 509025760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 24077, 48154, 96308, 120385, 192616, 240770, 481540, 963080, 10136417, 20272834, 40545668, 50682085, 81091336, 101364170, 202728340, 405456680]

約数ペア:

[(1, 405456680), (2, 202728340), (4, 101364170), (5, 81091336), (8, 50682085), (10, 40545668), (20, 20272834), (40, 10136417), (421, 963080), (842, 481540), (1684, 240770), (2105, 192616), (3368, 120385), (4210, 96308), (8420, 48154), (16840, 24077)]