31000040

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{7243}}^1$

素因数の和:7361

約数の個数: 32

約数和(自身を含む): 70411680

約数和(自身を除く): 39411640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 7243, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 775001, 1550002, 3100004, 3875005, 6200008, 7750010, 15500020, 31000040]

約数ペア:

[(1, 31000040), (2, 15500020), (4, 7750010), (5, 6200008), (8, 3875005), (10, 3100004), (20, 1550002), (40, 775001), (107, 289720), (214, 144860), (428, 72430), (535, 57944), (856, 36215), (1070, 28972), (2140, 14486), (4280, 7243)]