28291900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3109}}^1$

素因数の和:3143

約数の個数: 72

約数和(自身を含む): 75585440

約数和(自身を除く): 47293540

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 3109, 4550, 6218, 9100, 12436, 15545, 21763, 31090, 40417, 43526, 62180, 77725, 80834, 87052, 108815, 155450, 161668, 202085, 217630, 282919, 310900, 404170, 435260, 544075, 565838, 808340, 1010425, 1088150, 1131676, 1414595, 2020850, 2176300, 2829190, 4041700, 5658380, 7072975, 14145950, 28291900]

約数ペア:

[(1, 28291900), (2, 14145950), (4, 7072975), (5, 5658380), (7, 4041700), (10, 2829190), (13, 2176300), (14, 2020850), (20, 1414595), (25, 1131676), (26, 1088150), (28, 1010425), (35, 808340), (50, 565838), (52, 544075), (65, 435260), (70, 404170), (91, 310900), (100, 282919), (130, 217630), (140, 202085), (175, 161668), (182, 155450), (260, 108815), (325, 87052), (350, 80834), (364, 77725), (455, 62180), (650, 43526), (700, 40417), (910, 31090), (1300, 21763), (1820, 15545), (2275, 12436), (3109, 9100), (4550, 6218)]