20148910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 40979520

約数和(自身を除く): 20830610

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 61, 67, 85, 122, 134, 145, 170, 290, 305, 335, 493, 610, 670, 986, 1037, 1139, 1769, 1943, 2074, 2278, 2465, 3538, 3886, 4087, 4930, 5185, 5695, 8174, 8845, 9715, 10370, 11390, 17690, 19430, 20435, 30073, 33031, 40870, 60146, 66062, 69479, 118523, 138958, 150365, 165155, 237046, 300730, 330310, 347395, 592615, 694790, 1185230, 2014891, 4029782, 10074455, 20148910]

約数ペア:

[(1, 20148910), (2, 10074455), (5, 4029782), (10, 2014891), (17, 1185230), (29, 694790), (34, 592615), (58, 347395), (61, 330310), (67, 300730), (85, 237046), (122, 165155), (134, 150365), (145, 138958), (170, 118523), (290, 69479), (305, 66062), (335, 60146), (493, 40870), (610, 33031), (670, 30073), (986, 20435), (1037, 19430), (1139, 17690), (1769, 11390), (1943, 10370), (2074, 9715), (2278, 8845), (2465, 8174), (3538, 5695), (3886, 5185), (4087, 4930)]