13008440

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{811}}^1$

素因数の和:1223

約数の個数: 32

約数和(自身を含む): 29378160

約数和(自身を除く): 16369720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 811, 1604, 1622, 2005, 3208, 3244, 4010, 4055, 6488, 8020, 8110, 16040, 16220, 32440, 325211, 650422, 1300844, 1626055, 2601688, 3252110, 6504220, 13008440]

約数ペア:

[(1, 13008440), (2, 6504220), (4, 3252110), (5, 2601688), (8, 1626055), (10, 1300844), (20, 650422), (40, 325211), (401, 32440), (802, 16220), (811, 16040), (1604, 8110), (1622, 8020), (2005, 6488), (3208, 4055), (3244, 4010)]