18923140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 41658624

約数和(自身を除く): 22735484

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 470, 491, 820, 940, 982, 1927, 1964, 2455, 3854, 4910, 7708, 9635, 9820, 19270, 20131, 23077, 38540, 40262, 46154, 80524, 92308, 100655, 115385, 201310, 230770, 402620, 461540, 946157, 1892314, 3784628, 4730785, 9461570, 18923140]

約数ペア:

[(1, 18923140), (2, 9461570), (4, 4730785), (5, 3784628), (10, 1892314), (20, 946157), (41, 461540), (47, 402620), (82, 230770), (94, 201310), (164, 115385), (188, 100655), (205, 92308), (235, 80524), (410, 46154), (470, 40262), (491, 38540), (820, 23077), (940, 20131), (982, 19270), (1927, 9820), (1964, 9635), (2455, 7708), (3854, 4910)]