31485040

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3821}}^1$

素因数の和:3937

約数の個数: 40

約数和(自身を含む): 73932768

約数和(自身を除く): 42447728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 3821, 4120, 7642, 8240, 15284, 19105, 30568, 38210, 61136, 76420, 152840, 305680, 393563, 787126, 1574252, 1967815, 3148504, 3935630, 6297008, 7871260, 15742520, 31485040]

約数ペア:

[(1, 31485040), (2, 15742520), (4, 7871260), (5, 6297008), (8, 3935630), (10, 3148504), (16, 1967815), (20, 1574252), (40, 787126), (80, 393563), (103, 305680), (206, 152840), (412, 76420), (515, 61136), (824, 38210), (1030, 30568), (1648, 19105), (2060, 15284), (3821, 8240), (4120, 7642)]