31269980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{557}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 75370176

約数和(自身を除く): 44100196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 401, 557, 802, 1114, 1604, 2005, 2228, 2785, 2807, 3899, 4010, 5570, 5614, 7798, 8020, 11140, 11228, 14035, 15596, 19495, 28070, 38990, 56140, 77980, 223357, 446714, 893428, 1116785, 1563499, 2233570, 3126998, 4467140, 6253996, 7817495, 15634990, 31269980]

約数ペア:

[(1, 31269980), (2, 15634990), (4, 7817495), (5, 6253996), (7, 4467140), (10, 3126998), (14, 2233570), (20, 1563499), (28, 1116785), (35, 893428), (70, 446714), (140, 223357), (401, 77980), (557, 56140), (802, 38990), (1114, 28070), (1604, 19495), (2005, 15596), (2228, 14035), (2785, 11228), (2807, 11140), (3899, 8020), (4010, 7798), (5570, 5614)]