12686440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:842

約数の個数: 64

約数和(自身を含む): 31772160

約数和(自身を除く): 19085720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 787, 806, 1240, 1574, 1612, 2015, 3148, 3224, 3935, 4030, 6296, 7870, 8060, 10231, 15740, 16120, 20462, 24397, 31480, 40924, 48794, 51155, 81848, 97588, 102310, 121985, 195176, 204620, 243970, 317161, 409240, 487940, 634322, 975880, 1268644, 1585805, 2537288, 3171610, 6343220, 12686440]

約数ペア:

[(1, 12686440), (2, 6343220), (4, 3171610), (5, 2537288), (8, 1585805), (10, 1268644), (13, 975880), (20, 634322), (26, 487940), (31, 409240), (40, 317161), (52, 243970), (62, 204620), (65, 195176), (104, 121985), (124, 102310), (130, 97588), (155, 81848), (248, 51155), (260, 48794), (310, 40924), (403, 31480), (520, 24397), (620, 20462), (787, 16120), (806, 15740), (1240, 10231), (1574, 8060), (1612, 7870), (2015, 6296), (3148, 4030), (3224, 3935)]