688240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1229}}^1$

素因数の和:1249

約数の個数: 40

約数和(自身を含む): 1830240

約数和(自身を除く): 1142000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1229, 2458, 4916, 6145, 8603, 9832, 12290, 17206, 19664, 24580, 34412, 43015, 49160, 68824, 86030, 98320, 137648, 172060, 344120, 688240]

約数ペア:

[(1, 688240), (2, 344120), (4, 172060), (5, 137648), (7, 98320), (8, 86030), (10, 68824), (14, 49160), (16, 43015), (20, 34412), (28, 24580), (35, 19664), (40, 17206), (56, 12290), (70, 9832), (80, 8603), (112, 6145), (140, 4916), (280, 2458), (560, 1229)]