18636920

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 43740000

約数和(自身を除く): 25103080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 59, 106, 118, 149, 212, 236, 265, 295, 298, 424, 472, 530, 590, 596, 745, 1060, 1180, 1192, 1490, 2120, 2360, 2980, 3127, 5960, 6254, 7897, 8791, 12508, 15635, 15794, 17582, 25016, 31270, 31588, 35164, 39485, 43955, 62540, 63176, 70328, 78970, 87910, 125080, 157940, 175820, 315880, 351640, 465923, 931846, 1863692, 2329615, 3727384, 4659230, 9318460, 18636920]

約数ペア:

[(1, 18636920), (2, 9318460), (4, 4659230), (5, 3727384), (8, 2329615), (10, 1863692), (20, 931846), (40, 465923), (53, 351640), (59, 315880), (106, 175820), (118, 157940), (149, 125080), (212, 87910), (236, 78970), (265, 70328), (295, 63176), (298, 62540), (424, 43955), (472, 39485), (530, 35164), (590, 31588), (596, 31270), (745, 25016), (1060, 17582), (1180, 15794), (1192, 15635), (1490, 12508), (2120, 8791), (2360, 7897), (2980, 6254), (3127, 5960)]