1620040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 3690360

約数和(自身を除く): 2070320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 401, 404, 505, 802, 808, 1010, 1604, 2005, 2020, 3208, 4010, 4040, 8020, 16040, 40501, 81002, 162004, 202505, 324008, 405010, 810020, 1620040]

約数ペア:

[(1, 1620040), (2, 810020), (4, 405010), (5, 324008), (8, 202505), (10, 162004), (20, 81002), (40, 40501), (101, 16040), (202, 8020), (401, 4040), (404, 4010), (505, 3208), (802, 2020), (808, 2005), (1010, 1604)]