12953950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 25310880

約数和(自身を除く): 12356930

約数列:

[1, 2, 5, 10, 25, 41, 50, 71, 82, 89, 142, 178, 205, 355, 410, 445, 710, 890, 1025, 1775, 2050, 2225, 2911, 3550, 3649, 4450, 5822, 6319, 7298, 12638, 14555, 18245, 29110, 31595, 36490, 63190, 72775, 91225, 145550, 157975, 182450, 259079, 315950, 518158, 1295395, 2590790, 6476975, 12953950]

約数ペア:

[(1, 12953950), (2, 6476975), (5, 2590790), (10, 1295395), (25, 518158), (41, 315950), (50, 259079), (71, 182450), (82, 157975), (89, 145550), (142, 91225), (178, 72775), (205, 63190), (355, 36490), (410, 31595), (445, 29110), (710, 18245), (890, 14555), (1025, 12638), (1775, 7298), (2050, 6319), (2225, 5822), (2911, 4450), (3550, 3649)]