25372880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:844

約数の個数: 80

約数和(自身を含む): 65662464

約数和(自身を除く): 40289584

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 787, 806, 1040, 1240, 1574, 1612, 2015, 2480, 3148, 3224, 3935, 4030, 6296, 6448, 7870, 8060, 10231, 12592, 15740, 16120, 20462, 24397, 31480, 32240, 40924, 48794, 51155, 62960, 81848, 97588, 102310, 121985, 163696, 195176, 204620, 243970, 317161, 390352, 409240, 487940, 634322, 818480, 975880, 1268644, 1585805, 1951760, 2537288, 3171610, 5074576, 6343220, 12686440, 25372880]

約数ペア:

[(1, 25372880), (2, 12686440), (4, 6343220), (5, 5074576), (8, 3171610), (10, 2537288), (13, 1951760), (16, 1585805), (20, 1268644), (26, 975880), (31, 818480), (40, 634322), (52, 487940), (62, 409240), (65, 390352), (80, 317161), (104, 243970), (124, 204620), (130, 195176), (155, 163696), (208, 121985), (248, 102310), (260, 97588), (310, 81848), (403, 62960), (496, 51155), (520, 48794), (620, 40924), (787, 32240), (806, 31480), (1040, 24397), (1240, 20462), (1574, 16120), (1612, 15740), (2015, 12592), (2480, 10231), (3148, 8060), (3224, 7870), (3935, 6448), (4030, 6296)]