1780450040

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{415993}}^1$

素因数の和:416111

約数の個数: 32

約数和(自身を含む): 4043461680

約数和(自身を除く): 2263011640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 415993, 831986, 1663972, 2079965, 3327944, 4159930, 8319860, 16639720, 44511251, 89022502, 178045004, 222556255, 356090008, 445112510, 890225020, 1780450040]

約数ペア:

[(1, 1780450040), (2, 890225020), (4, 445112510), (5, 356090008), (8, 222556255), (10, 178045004), (20, 89022502), (40, 44511251), (107, 16639720), (214, 8319860), (428, 4159930), (535, 3327944), (856, 2079965), (1070, 1663972), (2140, 831986), (4280, 415993)]