21720075

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22277}}^1$

素因数の和:22303

約数の個数: 24

約数和(自身を含む): 38674608

約数和(自身を除く): 16954533

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 22277, 66831, 111385, 289601, 334155, 556925, 868803, 1448005, 1670775, 4344015, 7240025, 21720075]

約数ペア:

[(1, 21720075), (3, 7240025), (5, 4344015), (13, 1670775), (15, 1448005), (25, 868803), (39, 556925), (65, 334155), (75, 289601), (195, 111385), (325, 66831), (975, 22277)]