256480

素因数分解:

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

素因数の和:251

約数の個数: 48

約数和(自身を含む): 695520

約数和(自身を除く): 439040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 229, 280, 458, 560, 916, 1120, 1145, 1603, 1832, 2290, 3206, 3664, 4580, 6412, 7328, 8015, 9160, 12824, 16030, 18320, 25648, 32060, 36640, 51296, 64120, 128240, 256480]

約数ペア:

[(1, 256480), (2, 128240), (4, 64120), (5, 51296), (7, 36640), (8, 32060), (10, 25648), (14, 18320), (16, 16030), (20, 12824), (28, 9160), (32, 8015), (35, 7328), (40, 6412), (56, 4580), (70, 3664), (80, 3206), (112, 2290), (140, 1832), (160, 1603), (224, 1145), (229, 1120), (280, 916), (458, 560)]