19231280

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{571}}^1$

素因数の和:1005

約数の個数: 40

約数和(自身を含む): 44897424

約数和(自身を除く): 25666144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 571, 842, 1142, 1684, 2105, 2284, 2855, 3368, 4210, 4568, 5710, 6736, 8420, 9136, 11420, 16840, 22840, 33680, 45680, 240391, 480782, 961564, 1201955, 1923128, 2403910, 3846256, 4807820, 9615640, 19231280]

約数ペア:

[(1, 19231280), (2, 9615640), (4, 4807820), (5, 3846256), (8, 2403910), (10, 1923128), (16, 1201955), (20, 961564), (40, 480782), (80, 240391), (421, 45680), (571, 33680), (842, 22840), (1142, 16840), (1684, 11420), (2105, 9136), (2284, 8420), (2855, 6736), (3368, 5710), (4210, 4568)]