68312680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{27997}}^1$

素因数の和:28069

約数の個数: 32

約数和(自身を含む): 156228840

約数和(自身を除く): 87916160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 27997, 55994, 111988, 139985, 223976, 279970, 559940, 1119880, 1707817, 3415634, 6831268, 8539085, 13662536, 17078170, 34156340, 68312680]

約数ペア:

[(1, 68312680), (2, 34156340), (4, 17078170), (5, 13662536), (8, 8539085), (10, 6831268), (20, 3415634), (40, 1707817), (61, 1119880), (122, 559940), (244, 279970), (305, 223976), (488, 139985), (610, 111988), (1220, 55994), (2440, 27997)]