64706260

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{8317}}^1$

素因数の和:8715

約数の個数: 24

約数和(自身を含む): 136248840

約数和(自身を除く): 71542580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 8317, 16634, 33268, 41585, 83170, 166340, 3235313, 6470626, 12941252, 16176565, 32353130, 64706260]

約数ペア:

[(1, 64706260), (2, 32353130), (4, 16176565), (5, 12941252), (10, 6470626), (20, 3235313), (389, 166340), (778, 83170), (1556, 41585), (1945, 33268), (3890, 16634), (7780, 8317)]