397140880

素因数分解:

$2^4\times 5^1\times {\mathrm{4964261}}^1$

素因数の和:4964274

約数の個数: 20

約数和(自身を含む): 923352732

約数和(自身を除く): 526211852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4964261, 9928522, 19857044, 24821305, 39714088, 49642610, 79428176, 99285220, 198570440, 397140880]

約数ペア:

[(1, 397140880), (2, 198570440), (4, 99285220), (5, 79428176), (8, 49642610), (10, 39714088), (16, 24821305), (20, 19857044), (40, 9928522), (80, 4964261)]