21089715

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73999}}^1$

素因数の和:74026

約数の個数: 16

約数和(自身を含む): 35520000

約数和(自身を除く): 14430285

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 73999, 221997, 369995, 1109985, 1405981, 4217943, 7029905, 21089715]

約数ペア:

[(1, 21089715), (3, 7029905), (5, 4217943), (15, 1405981), (19, 1109985), (57, 369995), (95, 221997), (285, 73999)]