78282880

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^2$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 203639940

約数和(自身を除く): 125357060

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 97, 104, 128, 130, 160, 194, 208, 260, 320, 388, 416, 485, 520, 640, 776, 832, 970, 1040, 1261, 1552, 1664, 1940, 2080, 2522, 3104, 3880, 4160, 5044, 6208, 6305, 7760, 8320, 9409, 10088, 12416, 12610, 15520, 18818, 20176, 25220, 31040, 37636, 40352, 47045, 50440, 62080, 75272, 80704, 94090, 100880, 122317, 150544, 161408, 188180, 201760, 244634, 301088, 376360, 403520, 489268, 602176, 611585, 752720, 807040, 978536, 1204352, 1223170, 1505440, 1957072, 2446340, 3010880, 3914144, 4892680, 6021760, 7828288, 9785360, 15656576, 19570720, 39141440, 78282880]

約数ペア:

[(1, 78282880), (2, 39141440), (4, 19570720), (5, 15656576), (8, 9785360), (10, 7828288), (13, 6021760), (16, 4892680), (20, 3914144), (26, 3010880), (32, 2446340), (40, 1957072), (52, 1505440), (64, 1223170), (65, 1204352), (80, 978536), (97, 807040), (104, 752720), (128, 611585), (130, 602176), (160, 489268), (194, 403520), (208, 376360), (260, 301088), (320, 244634), (388, 201760), (416, 188180), (485, 161408), (520, 150544), (640, 122317), (776, 100880), (832, 94090), (970, 80704), (1040, 75272), (1261, 62080), (1552, 50440), (1664, 47045), (1940, 40352), (2080, 37636), (2522, 31040), (3104, 25220), (3880, 20176), (4160, 18818), (5044, 15520), (6208, 12610), (6305, 12416), (7760, 10088), (8320, 9409)]