8451680

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{523}}^1$

素因数の和:639

約数の個数: 48

約数和(自身を含む): 20203344

約数和(自身を除く): 11751664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 523, 808, 1010, 1046, 1616, 2020, 2092, 2615, 3232, 4040, 4184, 5230, 8080, 8368, 10460, 16160, 16736, 20920, 41840, 52823, 83680, 105646, 211292, 264115, 422584, 528230, 845168, 1056460, 1690336, 2112920, 4225840, 8451680]

約数ペア:

[(1, 8451680), (2, 4225840), (4, 2112920), (5, 1690336), (8, 1056460), (10, 845168), (16, 528230), (20, 422584), (32, 264115), (40, 211292), (80, 105646), (101, 83680), (160, 52823), (202, 41840), (404, 20920), (505, 16736), (523, 16160), (808, 10460), (1010, 8368), (1046, 8080), (1616, 5230), (2020, 4184), (2092, 4040), (2615, 3232)]