31356040

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4993}}^1$

素因数の和:5161

約数の個数: 32

約数和(自身を含む): 71014680

約数和(自身を除く): 39658640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 4993, 6280, 9986, 19972, 24965, 39944, 49930, 99860, 199720, 783901, 1567802, 3135604, 3919505, 6271208, 7839010, 15678020, 31356040]

約数ペア:

[(1, 31356040), (2, 15678020), (4, 7839010), (5, 6271208), (8, 3919505), (10, 3135604), (20, 1567802), (40, 783901), (157, 199720), (314, 99860), (628, 49930), (785, 39944), (1256, 24965), (1570, 19972), (3140, 9986), (4993, 6280)]