20752000

素因数分解:

$2^7\times 5^3\times {\mathrm{1297}}^1$

素因数の和:1326

約数の個数: 64

約数和(自身を含む): 51634440

約数和(自身を除く): 30882440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1297, 1600, 2000, 2594, 3200, 4000, 5188, 6485, 8000, 10376, 12970, 16000, 20752, 25940, 32425, 41504, 51880, 64850, 83008, 103760, 129700, 162125, 166016, 207520, 259400, 324250, 415040, 518800, 648500, 830080, 1037600, 1297000, 2075200, 2594000, 4150400, 5188000, 10376000, 20752000]

約数ペア:

[(1, 20752000), (2, 10376000), (4, 5188000), (5, 4150400), (8, 2594000), (10, 2075200), (16, 1297000), (20, 1037600), (25, 830080), (32, 648500), (40, 518800), (50, 415040), (64, 324250), (80, 259400), (100, 207520), (125, 166016), (128, 162125), (160, 129700), (200, 103760), (250, 83008), (320, 64850), (400, 51880), (500, 41504), (640, 32425), (800, 25940), (1000, 20752), (1297, 16000), (1600, 12970), (2000, 10376), (2594, 8000), (3200, 6485), (4000, 5188)]