81995920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{44563}}^1$

素因数の和:44599

約数の個数: 40

約数和(自身を含む): 198933696

約数和(自身を除く): 116937776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 44563, 89126, 178252, 222815, 356504, 445630, 713008, 891260, 1024949, 1782520, 2049898, 3565040, 4099796, 5124745, 8199592, 10249490, 16399184, 20498980, 40997960, 81995920]

約数ペア:

[(1, 81995920), (2, 40997960), (4, 20498980), (5, 16399184), (8, 10249490), (10, 8199592), (16, 5124745), (20, 4099796), (23, 3565040), (40, 2049898), (46, 1782520), (80, 1024949), (92, 891260), (115, 713008), (184, 445630), (230, 356504), (368, 222815), (460, 178252), (920, 89126), (1840, 44563)]