20163984880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1491419}}^1$

素因数の和:1491458

約数の個数: 60

約数和(自身を含む): 50764953960

約数和(自身を除く): 30600969080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6760, 13520, 1491419, 2982838, 5965676, 7457095, 11931352, 14914190, 19388447, 23862704, 29828380, 38776894, 59656760, 77553788, 96942235, 119313520, 155107576, 193884470, 252049811, 310215152, 387768940, 504099622, 775537880, 1008199244, 1260249055, 1551075760, 2016398488, 2520498110, 4032796976, 5040996220, 10081992440, 20163984880]

約数ペア:

[(1, 20163984880), (2, 10081992440), (4, 5040996220), (5, 4032796976), (8, 2520498110), (10, 2016398488), (13, 1551075760), (16, 1260249055), (20, 1008199244), (26, 775537880), (40, 504099622), (52, 387768940), (65, 310215152), (80, 252049811), (104, 193884470), (130, 155107576), (169, 119313520), (208, 96942235), (260, 77553788), (338, 59656760), (520, 38776894), (676, 29828380), (845, 23862704), (1040, 19388447), (1352, 14914190), (1690, 11931352), (2704, 7457095), (3380, 5965676), (6760, 2982838), (13520, 1491419)]