19676840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3539}}^1$

素因数の和:3689

約数の個数: 32

約数和(自身を含む): 44604000

約数和(自身を除く): 24927160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3539, 5560, 7078, 14156, 17695, 28312, 35390, 70780, 141560, 491921, 983842, 1967684, 2459605, 3935368, 4919210, 9838420, 19676840]

約数ペア:

[(1, 19676840), (2, 9838420), (4, 4919210), (5, 3935368), (8, 2459605), (10, 1967684), (20, 983842), (40, 491921), (139, 141560), (278, 70780), (556, 35390), (695, 28312), (1112, 17695), (1390, 14156), (2780, 7078), (3539, 5560)]