21916575

素因数分解:

$3^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 60

約数和(自身を含む): 41411040

約数和(自身を除く): 19494465

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 79, 81, 135, 137, 225, 237, 395, 405, 411, 675, 685, 711, 1185, 1233, 1975, 2025, 2055, 2133, 3425, 3555, 3699, 5925, 6165, 6399, 10275, 10665, 10823, 11097, 17775, 18495, 30825, 31995, 32469, 53325, 54115, 55485, 92475, 97407, 159975, 162345, 270575, 277425, 292221, 487035, 811725, 876663, 1461105, 2435175, 4383315, 7305525, 21916575]

約数ペア:

[(1, 21916575), (3, 7305525), (5, 4383315), (9, 2435175), (15, 1461105), (25, 876663), (27, 811725), (45, 487035), (75, 292221), (79, 277425), (81, 270575), (135, 162345), (137, 159975), (225, 97407), (237, 92475), (395, 55485), (405, 54115), (411, 53325), (675, 32469), (685, 31995), (711, 30825), (1185, 18495), (1233, 17775), (1975, 11097), (2025, 10823), (2055, 10665), (2133, 10275), (3425, 6399), (3555, 6165), (3699, 5925)]