255920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{457}}^1$

素因数の和:477

約数の個数: 40

約数和(自身を含む): 681504

約数和(自身を除く): 425584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 457, 560, 914, 1828, 2285, 3199, 3656, 4570, 6398, 7312, 9140, 12796, 15995, 18280, 25592, 31990, 36560, 51184, 63980, 127960, 255920]

約数ペア:

[(1, 255920), (2, 127960), (4, 63980), (5, 51184), (7, 36560), (8, 31990), (10, 25592), (14, 18280), (16, 15995), (20, 12796), (28, 9140), (35, 7312), (40, 6398), (56, 4570), (70, 3656), (80, 3199), (112, 2285), (140, 1828), (280, 914), (457, 560)]