18537820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7789}}^1$

素因数の和:7822

約数の個数: 48

約数和(自身を含む): 47113920

約数和(自身を除く): 28576100

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 7789, 15578, 31156, 38945, 54523, 77890, 109046, 132413, 155780, 218092, 264826, 272615, 529652, 545230, 662065, 926891, 1090460, 1324130, 1853782, 2648260, 3707564, 4634455, 9268910, 18537820]

約数ペア:

[(1, 18537820), (2, 9268910), (4, 4634455), (5, 3707564), (7, 2648260), (10, 1853782), (14, 1324130), (17, 1090460), (20, 926891), (28, 662065), (34, 545230), (35, 529652), (68, 272615), (70, 264826), (85, 218092), (119, 155780), (140, 132413), (170, 109046), (238, 77890), (340, 54523), (476, 38945), (595, 31156), (1190, 15578), (2380, 7789)]