21639725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{863}}^1$

素因数の和:949

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 7286995

約数列:

[1, 5, 17, 25, 59, 85, 295, 425, 863, 1003, 1475, 4315, 5015, 14671, 21575, 25075, 50917, 73355, 254585, 366775, 865589, 1272925, 4327945, 21639725]

約数ペア:

[(1, 21639725), (5, 4327945), (17, 1272925), (25, 865589), (59, 366775), (85, 254585), (295, 73355), (425, 50917), (863, 25075), (1003, 21575), (1475, 14671), (4315, 5015)]