12783880

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{797}}^1$

素因数の和:1209

約数の個数: 32

約数和(自身を含む): 28871640

約数和(自身を除く): 16087760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 797, 802, 1594, 1604, 2005, 3188, 3208, 3985, 4010, 6376, 7970, 8020, 15940, 16040, 31880, 319597, 639194, 1278388, 1597985, 2556776, 3195970, 6391940, 12783880]

約数ペア:

[(1, 12783880), (2, 6391940), (4, 3195970), (5, 2556776), (8, 1597985), (10, 1278388), (20, 639194), (40, 319597), (401, 31880), (797, 16040), (802, 15940), (1594, 8020), (1604, 7970), (2005, 6376), (3188, 4010), (3208, 3985)]