28200320

素因数分解:

$2^7\times 5^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:475

約数の個数: 64

約数和(自身を含む): 68115600

約数和(自身を除く): 39915280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 278, 317, 320, 556, 634, 640, 695, 1112, 1268, 1390, 1585, 2224, 2536, 2780, 3170, 4448, 5072, 5560, 6340, 8896, 10144, 11120, 12680, 17792, 20288, 22240, 25360, 40576, 44063, 44480, 50720, 88126, 88960, 101440, 176252, 202880, 220315, 352504, 440630, 705008, 881260, 1410016, 1762520, 2820032, 3525040, 5640064, 7050080, 14100160, 28200320]

約数ペア:

[(1, 28200320), (2, 14100160), (4, 7050080), (5, 5640064), (8, 3525040), (10, 2820032), (16, 1762520), (20, 1410016), (32, 881260), (40, 705008), (64, 440630), (80, 352504), (128, 220315), (139, 202880), (160, 176252), (278, 101440), (317, 88960), (320, 88126), (556, 50720), (634, 44480), (640, 44063), (695, 40576), (1112, 25360), (1268, 22240), (1390, 20288), (1585, 17792), (2224, 12680), (2536, 11120), (2780, 10144), (3170, 8896), (4448, 6340), (5072, 5560)]