81869920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 96

約数和(自身を含む): 212992416

約数和(自身を除く): 131122496

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 181, 220, 257, 352, 362, 440, 514, 724, 880, 905, 1028, 1285, 1448, 1760, 1810, 1991, 2056, 2570, 2827, 2896, 3620, 3982, 4112, 5140, 5654, 5792, 7240, 7964, 8224, 9955, 10280, 11308, 14135, 14480, 15928, 19910, 20560, 22616, 28270, 28960, 31856, 39820, 41120, 45232, 46517, 56540, 63712, 79640, 90464, 93034, 113080, 159280, 186068, 226160, 232585, 318560, 372136, 452320, 465170, 511687, 744272, 930340, 1023374, 1488544, 1860680, 2046748, 2558435, 3721360, 4093496, 5116870, 7442720, 8186992, 10233740, 16373984, 20467480, 40934960, 81869920]

約数ペア:

[(1, 81869920), (2, 40934960), (4, 20467480), (5, 16373984), (8, 10233740), (10, 8186992), (11, 7442720), (16, 5116870), (20, 4093496), (22, 3721360), (32, 2558435), (40, 2046748), (44, 1860680), (55, 1488544), (80, 1023374), (88, 930340), (110, 744272), (160, 511687), (176, 465170), (181, 452320), (220, 372136), (257, 318560), (352, 232585), (362, 226160), (440, 186068), (514, 159280), (724, 113080), (880, 93034), (905, 90464), (1028, 79640), (1285, 63712), (1448, 56540), (1760, 46517), (1810, 45232), (1991, 41120), (2056, 39820), (2570, 31856), (2827, 28960), (2896, 28270), (3620, 22616), (3982, 20560), (4112, 19910), (5140, 15928), (5654, 14480), (5792, 14135), (7240, 11308), (7964, 10280), (8224, 9955)]