19723520

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{811}}^1$

素因数の和:851

約数の個数: 72

約数和(自身を含む): 49791840

約数和(自身を除く): 30068320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 811, 1216, 1280, 1520, 1622, 2432, 3040, 3244, 4055, 4864, 6080, 6488, 8110, 12160, 12976, 15409, 16220, 24320, 25952, 30818, 32440, 51904, 61636, 64880, 77045, 103808, 123272, 129760, 154090, 207616, 246544, 259520, 308180, 493088, 519040, 616360, 986176, 1038080, 1232720, 1972352, 2465440, 3944704, 4930880, 9861760, 19723520]

約数ペア:

[(1, 19723520), (2, 9861760), (4, 4930880), (5, 3944704), (8, 2465440), (10, 1972352), (16, 1232720), (19, 1038080), (20, 986176), (32, 616360), (38, 519040), (40, 493088), (64, 308180), (76, 259520), (80, 246544), (95, 207616), (128, 154090), (152, 129760), (160, 123272), (190, 103808), (256, 77045), (304, 64880), (320, 61636), (380, 51904), (608, 32440), (640, 30818), (760, 25952), (811, 24320), (1216, 16220), (1280, 15409), (1520, 12976), (1622, 12160), (2432, 8110), (3040, 6488), (3244, 6080), (4055, 4864)]