64720719

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3413}}^1$

素因数の和:3476

約数の個数: 36

約数和(自身を含む): 111310056

約数和(自身を除く): 46589337

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 2107, 2709, 3413, 6321, 10239, 18963, 23891, 30717, 71673, 146759, 167237, 215019, 440277, 501711, 1027313, 1320831, 1505133, 3081939, 7191191, 9245817, 21573573, 64720719]

約数ペア:

[(1, 64720719), (3, 21573573), (7, 9245817), (9, 7191191), (21, 3081939), (43, 1505133), (49, 1320831), (63, 1027313), (129, 501711), (147, 440277), (301, 215019), (387, 167237), (441, 146759), (903, 71673), (2107, 30717), (2709, 23891), (3413, 18963), (6321, 10239)]