20898800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4019}}^1$

素因数の和:4050

約数の個数: 60

約数和(自身を含む): 54085080

約数和(自身を除く): 33186280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4019, 5200, 8038, 16076, 20095, 32152, 40190, 52247, 64304, 80380, 100475, 104494, 160760, 200950, 208988, 261235, 321520, 401900, 417976, 522470, 803800, 835952, 1044940, 1306175, 1607600, 2089880, 2612350, 4179760, 5224700, 10449400, 20898800]

約数ペア:

[(1, 20898800), (2, 10449400), (4, 5224700), (5, 4179760), (8, 2612350), (10, 2089880), (13, 1607600), (16, 1306175), (20, 1044940), (25, 835952), (26, 803800), (40, 522470), (50, 417976), (52, 401900), (65, 321520), (80, 261235), (100, 208988), (104, 200950), (130, 160760), (200, 104494), (208, 100475), (260, 80380), (325, 64304), (400, 52247), (520, 40190), (650, 32152), (1040, 20095), (1300, 16076), (2600, 8038), (4019, 5200)]