19708960

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{619}}^1$

素因数の和:833

約数の個数: 48

約数和(自身を含む): 46872000

約数和(自身を除く): 27163040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 619, 796, 995, 1238, 1592, 1990, 2476, 3095, 3184, 3980, 4952, 6190, 6368, 7960, 9904, 12380, 15920, 19808, 24760, 31840, 49520, 99040, 123181, 246362, 492724, 615905, 985448, 1231810, 1970896, 2463620, 3941792, 4927240, 9854480, 19708960]

約数ペア:

[(1, 19708960), (2, 9854480), (4, 4927240), (5, 3941792), (8, 2463620), (10, 1970896), (16, 1231810), (20, 985448), (32, 615905), (40, 492724), (80, 246362), (160, 123181), (199, 99040), (398, 49520), (619, 31840), (796, 24760), (995, 19808), (1238, 15920), (1592, 12380), (1990, 9904), (2476, 7960), (3095, 6368), (3184, 6190), (3980, 4952)]