21552175

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 30073720

約数和(自身を除く): 8521545

約数列:

[1, 5, 17, 19, 25, 85, 95, 157, 289, 323, 425, 475, 785, 1445, 1615, 2669, 2983, 3925, 5491, 7225, 8075, 13345, 14915, 27455, 45373, 50711, 66725, 74575, 137275, 226865, 253555, 862087, 1134325, 1267775, 4310435, 21552175]

約数ペア:

[(1, 21552175), (5, 4310435), (17, 1267775), (19, 1134325), (25, 862087), (85, 253555), (95, 226865), (157, 137275), (289, 74575), (323, 66725), (425, 50711), (475, 45373), (785, 27455), (1445, 14915), (1615, 13345), (2669, 8075), (2983, 7225), (3925, 5491)]