287318480

素因数分解:

$2^4\times 5^1\times {\mathrm{3591481}}^1$

素因数の和:3591494

約数の個数: 20

約数和(自身を含む): 668015652

約数和(自身を除く): 380697172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3591481, 7182962, 14365924, 17957405, 28731848, 35914810, 57463696, 71829620, 143659240, 287318480]

約数ペア:

[(1, 287318480), (2, 143659240), (4, 71829620), (5, 57463696), (8, 35914810), (10, 28731848), (16, 17957405), (20, 14365924), (40, 7182962), (80, 3591481)]