20458630

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 21013370

約数列:

[1, 2, 5, 10, 19, 29, 38, 47, 58, 79, 94, 95, 145, 158, 190, 235, 290, 395, 470, 551, 790, 893, 1102, 1363, 1501, 1786, 2291, 2726, 2755, 3002, 3713, 4465, 4582, 5510, 6815, 7426, 7505, 8930, 11455, 13630, 15010, 18565, 22910, 25897, 37130, 43529, 51794, 70547, 87058, 107677, 129485, 141094, 215354, 217645, 258970, 352735, 435290, 538385, 705470, 1076770, 2045863, 4091726, 10229315, 20458630]

約数ペア:

[(1, 20458630), (2, 10229315), (5, 4091726), (10, 2045863), (19, 1076770), (29, 705470), (38, 538385), (47, 435290), (58, 352735), (79, 258970), (94, 217645), (95, 215354), (145, 141094), (158, 129485), (190, 107677), (235, 87058), (290, 70547), (395, 51794), (470, 43529), (551, 37130), (790, 25897), (893, 22910), (1102, 18565), (1363, 15010), (1501, 13630), (1786, 11455), (2291, 8930), (2726, 7505), (2755, 7426), (3002, 6815), (3713, 5510), (4465, 4582)]