7820200

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 18508860

約数和(自身を除く): 10688660

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 641, 1220, 1282, 1525, 2440, 2564, 3050, 3205, 5128, 6100, 6410, 12200, 12820, 16025, 25640, 32050, 39101, 64100, 78202, 128200, 156404, 195505, 312808, 391010, 782020, 977525, 1564040, 1955050, 3910100, 7820200]

約数ペア:

[(1, 7820200), (2, 3910100), (4, 1955050), (5, 1564040), (8, 977525), (10, 782020), (20, 391010), (25, 312808), (40, 195505), (50, 156404), (61, 128200), (100, 78202), (122, 64100), (200, 39101), (244, 32050), (305, 25640), (488, 16025), (610, 12820), (641, 12200), (1220, 6410), (1282, 6100), (1525, 5128), (2440, 3205), (2564, 3050)]