31167640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{709}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 80769600

約数和(自身を除く): 49601960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 628, 709, 785, 1099, 1256, 1418, 1570, 2198, 2836, 3140, 3545, 4396, 4963, 5495, 5672, 6280, 7090, 8792, 9926, 10990, 14180, 19852, 21980, 24815, 28360, 39704, 43960, 49630, 99260, 111313, 198520, 222626, 445252, 556565, 779191, 890504, 1113130, 1558382, 2226260, 3116764, 3895955, 4452520, 6233528, 7791910, 15583820, 31167640]

約数ペア:

[(1, 31167640), (2, 15583820), (4, 7791910), (5, 6233528), (7, 4452520), (8, 3895955), (10, 3116764), (14, 2226260), (20, 1558382), (28, 1113130), (35, 890504), (40, 779191), (56, 556565), (70, 445252), (140, 222626), (157, 198520), (280, 111313), (314, 99260), (628, 49630), (709, 43960), (785, 39704), (1099, 28360), (1256, 24815), (1418, 21980), (1570, 19852), (2198, 14180), (2836, 10990), (3140, 9926), (3545, 8792), (4396, 7090), (4963, 6280), (5495, 5672)]