81615040

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{853}}^1$

素因数の和:906

約数の個数: 112

約数和(自身を含む): 218651328

約数和(自身を除く): 137036288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 130, 160, 184, 208, 230, 260, 299, 320, 368, 416, 460, 520, 598, 736, 832, 853, 920, 1040, 1196, 1472, 1495, 1706, 1840, 2080, 2392, 2990, 3412, 3680, 4160, 4265, 4784, 5980, 6824, 7360, 8530, 9568, 11089, 11960, 13648, 17060, 19136, 19619, 22178, 23920, 27296, 34120, 39238, 44356, 47840, 54592, 55445, 68240, 78476, 88712, 95680, 98095, 110890, 136480, 156952, 177424, 196190, 221780, 255047, 272960, 313904, 354848, 392380, 443560, 510094, 627808, 709696, 784760, 887120, 1020188, 1255616, 1275235, 1569520, 1774240, 2040376, 2550470, 3139040, 3548480, 4080752, 5100940, 6278080, 8161504, 10201880, 16323008, 20403760, 40807520, 81615040]

約数ペア:

[(1, 81615040), (2, 40807520), (4, 20403760), (5, 16323008), (8, 10201880), (10, 8161504), (13, 6278080), (16, 5100940), (20, 4080752), (23, 3548480), (26, 3139040), (32, 2550470), (40, 2040376), (46, 1774240), (52, 1569520), (64, 1275235), (65, 1255616), (80, 1020188), (92, 887120), (104, 784760), (115, 709696), (130, 627808), (160, 510094), (184, 443560), (208, 392380), (230, 354848), (260, 313904), (299, 272960), (320, 255047), (368, 221780), (416, 196190), (460, 177424), (520, 156952), (598, 136480), (736, 110890), (832, 98095), (853, 95680), (920, 88712), (1040, 78476), (1196, 68240), (1472, 55445), (1495, 54592), (1706, 47840), (1840, 44356), (2080, 39238), (2392, 34120), (2990, 27296), (3412, 23920), (3680, 22178), (4160, 19619), (4265, 19136), (4784, 17060), (5980, 13648), (6824, 11960), (7360, 11089), (8530, 9568)]