19178925

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 33474048

約数和(自身を除く): 14295123

約数列:

[1, 3, 5, 15, 25, 31, 73, 75, 93, 113, 155, 219, 339, 365, 465, 565, 775, 1095, 1695, 1825, 2263, 2325, 2825, 3503, 5475, 6789, 8249, 8475, 10509, 11315, 17515, 24747, 33945, 41245, 52545, 56575, 87575, 123735, 169725, 206225, 255719, 262725, 618675, 767157, 1278595, 3835785, 6392975, 19178925]

約数ペア:

[(1, 19178925), (3, 6392975), (5, 3835785), (15, 1278595), (25, 767157), (31, 618675), (73, 262725), (75, 255719), (93, 206225), (113, 169725), (155, 123735), (219, 87575), (339, 56575), (365, 52545), (465, 41245), (565, 33945), (775, 24747), (1095, 17515), (1695, 11315), (1825, 10509), (2263, 8475), (2325, 8249), (2825, 6789), (3503, 5475)]