21084180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27031}}^1$

素因数の和:27056

約数の個数: 48

約数和(自身を含む): 63579264

約数和(自身を除く): 42495084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27031, 54062, 81093, 108124, 135155, 162186, 270310, 324372, 351403, 405465, 540620, 702806, 810930, 1054209, 1405612, 1621860, 1757015, 2108418, 3514030, 4216836, 5271045, 7028060, 10542090, 21084180]

約数ペア:

[(1, 21084180), (2, 10542090), (3, 7028060), (4, 5271045), (5, 4216836), (6, 3514030), (10, 2108418), (12, 1757015), (13, 1621860), (15, 1405612), (20, 1054209), (26, 810930), (30, 702806), (39, 540620), (52, 405465), (60, 351403), (65, 324372), (78, 270310), (130, 162186), (156, 135155), (195, 108124), (260, 81093), (390, 54062), (780, 27031)]