21839025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1723}}^1$

素因数の和:1762

約数の個数: 36

約数和(自身を含む): 39121008

約数和(自身を除く): 17281983

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 1723, 2535, 4225, 5169, 8615, 12675, 22399, 25845, 43075, 67197, 111995, 129225, 291187, 335985, 559975, 873561, 1455935, 1679925, 4367805, 7279675, 21839025]

約数ペア:

[(1, 21839025), (3, 7279675), (5, 4367805), (13, 1679925), (15, 1455935), (25, 873561), (39, 559975), (65, 335985), (75, 291187), (169, 129225), (195, 111995), (325, 67197), (507, 43075), (845, 25845), (975, 22399), (1723, 12675), (2535, 8615), (4225, 5169)]