28246640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4973}}^1$

素因数の和:5057

約数の個数: 40

約数和(自身を含む): 66611808

約数和(自身を除く): 38365168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4973, 5680, 9946, 19892, 24865, 39784, 49730, 79568, 99460, 198920, 353083, 397840, 706166, 1412332, 1765415, 2824664, 3530830, 5649328, 7061660, 14123320, 28246640]

約数ペア:

[(1, 28246640), (2, 14123320), (4, 7061660), (5, 5649328), (8, 3530830), (10, 2824664), (16, 1765415), (20, 1412332), (40, 706166), (71, 397840), (80, 353083), (142, 198920), (284, 99460), (355, 79568), (568, 49730), (710, 39784), (1136, 24865), (1420, 19892), (2840, 9946), (4973, 5680)]