399288.0000000

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1993}}^1$

素因数の和:2111

約数の個数: 32

約数和(自身を含む): 19381680

約数和(自身を除く): 10851640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 1993, 2140, 3986, 4280, 7972, 9965, 15944, 19930, 39860, 79720, 213251, 426502, 853004, 1066255, 1706008, 2132510, 4265020, 8530040]

約数ペア:

[(1, 8530040), (2, 4265020), (4, 2132510), (5, 1706008), (8, 1066255), (10, 853004), (20, 426502), (40, 213251), (107, 79720), (214, 39860), (428, 19930), (535, 15944), (856, 9965), (1070, 7972), (1993, 4280), (2140, 3986)]