20986480

素因数分解:

$2^4\times 5^1\times {\mathrm{262331}}^1$

素因数の和:262344

約数の個数: 20

約数和(自身を含む): 48793752

約数和(自身を除く): 27807272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262331, 524662, 1049324, 1311655, 2098648, 2623310, 4197296, 5246620, 10493240, 20986480]

約数ペア:

[(1, 20986480), (2, 10493240), (4, 5246620), (5, 4197296), (8, 2623310), (10, 2098648), (16, 1311655), (20, 1049324), (40, 524662), (80, 262331)]