397059440

素因数分解:

$2^4\times 5^1\times {\mathrm{4963243}}^1$

素因数の和:4963256

約数の個数: 20

約数和(自身を含む): 923163384

約数和(自身を除く): 526103944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4963243, 9926486, 19852972, 24816215, 39705944, 49632430, 79411888, 99264860, 198529720, 397059440]

約数ペア:

[(1, 397059440), (2, 198529720), (4, 99264860), (5, 79411888), (8, 49632430), (10, 39705944), (16, 24816215), (20, 19852972), (40, 9926486), (80, 4963243)]