20822440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5849}}^1$

素因数の和:5949

約数の個数: 32

約数和(自身を含む): 47385000

約数和(自身を除く): 26562560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5849, 11698, 23396, 29245, 46792, 58490, 116980, 233960, 520561, 1041122, 2082244, 2602805, 4164488, 5205610, 10411220, 20822440]

約数ペア:

[(1, 20822440), (2, 10411220), (4, 5205610), (5, 4164488), (8, 2602805), (10, 2082244), (20, 1041122), (40, 520561), (89, 233960), (178, 116980), (356, 58490), (445, 46792), (712, 29245), (890, 23396), (1780, 11698), (3560, 5849)]