21316425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21863}}^1$

素因数の和:21889

約数の個数: 24

約数和(自身を含む): 37955904

約数和(自身を除く): 16639479

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21863, 65589, 109315, 284219, 327945, 546575, 852657, 1421095, 1639725, 4263285, 7105475, 21316425]

約数ペア:

[(1, 21316425), (3, 7105475), (5, 4263285), (13, 1639725), (15, 1421095), (25, 852657), (39, 546575), (65, 327945), (75, 284219), (195, 109315), (325, 65589), (975, 21863)]