2139880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{877}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 4899240

約数和(自身を除く): 2759360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 877, 1220, 1754, 2440, 3508, 4385, 7016, 8770, 17540, 35080, 53497, 106994, 213988, 267485, 427976, 534970, 1069940, 2139880]

約数ペア:

[(1, 2139880), (2, 1069940), (4, 534970), (5, 427976), (8, 267485), (10, 213988), (20, 106994), (40, 53497), (61, 35080), (122, 17540), (244, 8770), (305, 7016), (488, 4385), (610, 3508), (877, 2440), (1220, 1754)]