128240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{229}}^1$

素因数の和:249

約数の個数: 40

約数和(自身を含む): 342240

約数和(自身を除く): 214000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 229, 280, 458, 560, 916, 1145, 1603, 1832, 2290, 3206, 3664, 4580, 6412, 8015, 9160, 12824, 16030, 18320, 25648, 32060, 64120, 128240]

約数ペア:

[(1, 128240), (2, 64120), (4, 32060), (5, 25648), (7, 18320), (8, 16030), (10, 12824), (14, 9160), (16, 8015), (20, 6412), (28, 4580), (35, 3664), (40, 3206), (56, 2290), (70, 1832), (80, 1603), (112, 1145), (140, 916), (229, 560), (280, 458)]