21570900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5531}}^1$

素因数の和:5561

約数の個数: 72

約数和(自身を含む): 67224864

約数和(自身を除く): 45653964

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, 5531, 11062, 16593, 22124, 27655, 33186, 55310, 66372, 71903, 82965, 110620, 138275, 143806, 165930, 215709, 276550, 287612, 331860, 359515, 414825, 431418, 553100, 719030, 829650, 862836, 1078545, 1438060, 1659300, 1797575, 2157090, 3595150, 4314180, 5392725, 7190300, 10785450, 21570900]

約数ペア:

[(1, 21570900), (2, 10785450), (3, 7190300), (4, 5392725), (5, 4314180), (6, 3595150), (10, 2157090), (12, 1797575), (13, 1659300), (15, 1438060), (20, 1078545), (25, 862836), (26, 829650), (30, 719030), (39, 553100), (50, 431418), (52, 414825), (60, 359515), (65, 331860), (75, 287612), (78, 276550), (100, 215709), (130, 165930), (150, 143806), (156, 138275), (195, 110620), (260, 82965), (300, 71903), (325, 66372), (390, 55310), (650, 33186), (780, 27655), (975, 22124), (1300, 16593), (1950, 11062), (3900, 5531)]