1315280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:455

約数の個数: 40

約数和(自身を含む): 3140424

約数和(自身を除く): 1825144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 401, 410, 656, 802, 820, 1604, 1640, 2005, 3208, 3280, 4010, 6416, 8020, 16040, 16441, 32080, 32882, 65764, 82205, 131528, 164410, 263056, 328820, 657640, 1315280]

約数ペア:

[(1, 1315280), (2, 657640), (4, 328820), (5, 263056), (8, 164410), (10, 131528), (16, 82205), (20, 65764), (40, 32882), (41, 32080), (80, 16441), (82, 16040), (164, 8020), (205, 6416), (328, 4010), (401, 3280), (410, 3208), (656, 2005), (802, 1640), (820, 1604)]