20828800

素因数分解:

$2^7\times 5^2\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:330

約数の個数: 96

約数和(自身を含む): 53880480

約数和(自身を除く): 33051680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 128, 160, 184, 200, 230, 283, 320, 368, 400, 460, 566, 575, 640, 736, 800, 920, 1132, 1150, 1415, 1472, 1600, 1840, 2264, 2300, 2830, 2944, 3200, 3680, 4528, 4600, 5660, 6509, 7075, 7360, 9056, 9200, 11320, 13018, 14150, 14720, 18112, 18400, 22640, 26036, 28300, 32545, 36224, 36800, 45280, 52072, 56600, 65090, 73600, 90560, 104144, 113200, 130180, 162725, 181120, 208288, 226400, 260360, 325450, 416576, 452800, 520720, 650900, 833152, 905600, 1041440, 1301800, 2082880, 2603600, 4165760, 5207200, 10414400, 20828800]

約数ペア:

[(1, 20828800), (2, 10414400), (4, 5207200), (5, 4165760), (8, 2603600), (10, 2082880), (16, 1301800), (20, 1041440), (23, 905600), (25, 833152), (32, 650900), (40, 520720), (46, 452800), (50, 416576), (64, 325450), (80, 260360), (92, 226400), (100, 208288), (115, 181120), (128, 162725), (160, 130180), (184, 113200), (200, 104144), (230, 90560), (283, 73600), (320, 65090), (368, 56600), (400, 52072), (460, 45280), (566, 36800), (575, 36224), (640, 32545), (736, 28300), (800, 26036), (920, 22640), (1132, 18400), (1150, 18112), (1415, 14720), (1472, 14150), (1600, 13018), (1840, 11320), (2264, 9200), (2300, 9056), (2830, 7360), (2944, 7075), (3200, 6509), (3680, 5660), (4528, 4600)]