261036620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{727}}^1\times {\mathrm{1381}}^1$

素因数の和:2130

約数の個数: 48

約数和(自身を含む): 591584448

約数和(自身を除く): 330547828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 727, 1381, 1454, 2762, 2908, 3635, 5524, 6905, 7270, 9451, 13810, 14540, 17953, 18902, 27620, 35906, 37804, 47255, 71812, 89765, 94510, 179530, 189020, 359060, 1003987, 2007974, 4015948, 5019935, 10039870, 13051831, 20079740, 26103662, 52207324, 65259155, 130518310, 261036620]

約数ペア:

[(1, 261036620), (2, 130518310), (4, 65259155), (5, 52207324), (10, 26103662), (13, 20079740), (20, 13051831), (26, 10039870), (52, 5019935), (65, 4015948), (130, 2007974), (260, 1003987), (727, 359060), (1381, 189020), (1454, 179530), (2762, 94510), (2908, 89765), (3635, 71812), (5524, 47255), (6905, 37804), (7270, 35906), (9451, 27620), (13810, 18902), (14540, 17953)]