398421040

素因数分解:

$2^4\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{4253}}^1$

素因数の和:5437

約数の個数: 40

約数和(自身を含む): 927337968

約数和(自身を除く): 528916928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1171, 2342, 4253, 4684, 5855, 8506, 9368, 11710, 17012, 18736, 21265, 23420, 34024, 42530, 46840, 68048, 85060, 93680, 170120, 340240, 4980263, 9960526, 19921052, 24901315, 39842104, 49802630, 79684208, 99605260, 199210520, 398421040]

約数ペア:

[(1, 398421040), (2, 199210520), (4, 99605260), (5, 79684208), (8, 49802630), (10, 39842104), (16, 24901315), (20, 19921052), (40, 9960526), (80, 4980263), (1171, 340240), (2342, 170120), (4253, 93680), (4684, 85060), (5855, 68048), (8506, 46840), (9368, 42530), (11710, 34024), (17012, 23420), (18736, 21265)]