1287920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:977

約数の個数: 40

約数和(自身を含む): 3173904

約数和(自身を除く): 1885984

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 947, 1360, 1894, 3788, 4735, 7576, 9470, 15152, 16099, 18940, 32198, 37880, 64396, 75760, 80495, 128792, 160990, 257584, 321980, 643960, 1287920]

約数ペア:

[(1, 1287920), (2, 643960), (4, 321980), (5, 257584), (8, 160990), (10, 128792), (16, 80495), (17, 75760), (20, 64396), (34, 37880), (40, 32198), (68, 18940), (80, 16099), (85, 15152), (136, 9470), (170, 7576), (272, 4735), (340, 3788), (680, 1894), (947, 1360)]