21061875

素因数分解:

$3^1\times 5^4\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 40

約数和(自身を含む): 35988480

約数和(自身を除く): 14926605

約数列:

[1, 3, 5, 15, 25, 47, 75, 125, 141, 235, 239, 375, 625, 705, 717, 1175, 1195, 1875, 3525, 3585, 5875, 5975, 11233, 17625, 17925, 29375, 29875, 33699, 56165, 88125, 89625, 149375, 168495, 280825, 448125, 842475, 1404125, 4212375, 7020625, 21061875]

約数ペア:

[(1, 21061875), (3, 7020625), (5, 4212375), (15, 1404125), (25, 842475), (47, 448125), (75, 280825), (125, 168495), (141, 149375), (235, 89625), (239, 88125), (375, 56165), (625, 33699), (705, 29875), (717, 29375), (1175, 17925), (1195, 17625), (1875, 11233), (3525, 5975), (3585, 5875)]