81288688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 181793920

約数和(自身を除く): 100505232

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 67, 76, 104, 134, 152, 208, 247, 268, 304, 307, 494, 536, 614, 871, 988, 1072, 1228, 1273, 1742, 1976, 2456, 2546, 3484, 3952, 3991, 4912, 5092, 5833, 6968, 7982, 10184, 11666, 13936, 15964, 16549, 20368, 20569, 23332, 31928, 33098, 41138, 46664, 63856, 66196, 75829, 82276, 93328, 132392, 151658, 164552, 264784, 267397, 303316, 329104, 390811, 534794, 606632, 781622, 1069588, 1213264, 1563244, 2139176, 3126488, 4278352, 5080543, 6252976, 10161086, 20322172, 40644344, 81288688]

約数ペア:

[(1, 81288688), (2, 40644344), (4, 20322172), (8, 10161086), (13, 6252976), (16, 5080543), (19, 4278352), (26, 3126488), (38, 2139176), (52, 1563244), (67, 1213264), (76, 1069588), (104, 781622), (134, 606632), (152, 534794), (208, 390811), (247, 329104), (268, 303316), (304, 267397), (307, 264784), (494, 164552), (536, 151658), (614, 132392), (871, 93328), (988, 82276), (1072, 75829), (1228, 66196), (1273, 63856), (1742, 46664), (1976, 41138), (2456, 33098), (2546, 31928), (3484, 23332), (3952, 20569), (3991, 20368), (4912, 16549), (5092, 15964), (5833, 13936), (6968, 11666), (7982, 10184)]