128520357

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2293}}^1$

素因数の和:2477

約数の個数: 32

約数和(自身を含む): 208772352

約数和(自身を除く): 80251995

約数列:

[1, 3, 7, 17, 21, 51, 119, 157, 357, 471, 1099, 2293, 2669, 3297, 6879, 8007, 16051, 18683, 38981, 48153, 56049, 116943, 272867, 360001, 818601, 1080003, 2520007, 6120017, 7560021, 18360051, 42840119, 128520357]

約数ペア:

[(1, 128520357), (3, 42840119), (7, 18360051), (17, 7560021), (21, 6120017), (51, 2520007), (119, 1080003), (157, 818601), (357, 360001), (471, 272867), (1099, 116943), (2293, 56049), (2669, 48153), (3297, 38981), (6879, 18683), (8007, 16051)]