640542

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:264

約数の個数: 32

約数和(自身を含む): 1488384

約数和(自身を除く): 847842

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 101, 151, 202, 302, 303, 453, 606, 707, 906, 1057, 1414, 2114, 2121, 3171, 4242, 6342, 15251, 30502, 45753, 91506, 106757, 213514, 320271, 640542]

約数ペア:

[(1, 640542), (2, 320271), (3, 213514), (6, 106757), (7, 91506), (14, 45753), (21, 30502), (42, 15251), (101, 6342), (151, 4242), (202, 3171), (302, 2121), (303, 2114), (453, 1414), (606, 1057), (707, 906)]