21453900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5501}}^1$

素因数の和:5531

約数の個数: 72

約数和(自身を含む): 66860304

約数和(自身を除く): 45406404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5501, 11002, 16503, 22004, 27505, 33006, 55010, 66012, 71513, 82515, 110020, 137525, 143026, 165030, 214539, 275050, 286052, 330060, 357565, 412575, 429078, 550100, 715130, 825150, 858156, 1072695, 1430260, 1650300, 1787825, 2145390, 3575650, 4290780, 5363475, 7151300, 10726950, 21453900]

約数ペア:

[(1, 21453900), (2, 10726950), (3, 7151300), (4, 5363475), (5, 4290780), (6, 3575650), (10, 2145390), (12, 1787825), (13, 1650300), (15, 1430260), (20, 1072695), (25, 858156), (26, 825150), (30, 715130), (39, 550100), (50, 429078), (52, 412575), (60, 357565), (65, 330060), (75, 286052), (78, 275050), (100, 214539), (130, 165030), (150, 143026), (156, 137525), (195, 110020), (260, 82515), (300, 71513), (325, 66012), (390, 55010), (650, 33006), (780, 27505), (975, 22004), (1300, 16503), (1950, 11002), (3900, 5501)]