20771660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 54698112

約数和(自身を除く): 33926452

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 101, 113, 130, 140, 182, 202, 226, 260, 364, 404, 452, 455, 505, 565, 707, 791, 910, 1010, 1130, 1313, 1414, 1469, 1582, 1820, 2020, 2260, 2626, 2828, 2938, 3164, 3535, 3955, 5252, 5876, 6565, 7070, 7345, 7910, 9191, 10283, 11413, 13130, 14140, 14690, 15820, 18382, 20566, 22826, 26260, 29380, 36764, 41132, 45652, 45955, 51415, 57065, 79891, 91910, 102830, 114130, 148369, 159782, 183820, 205660, 228260, 296738, 319564, 399455, 593476, 741845, 798910, 1038583, 1483690, 1597820, 2077166, 2967380, 4154332, 5192915, 10385830, 20771660]

約数ペア:

[(1, 20771660), (2, 10385830), (4, 5192915), (5, 4154332), (7, 2967380), (10, 2077166), (13, 1597820), (14, 1483690), (20, 1038583), (26, 798910), (28, 741845), (35, 593476), (52, 399455), (65, 319564), (70, 296738), (91, 228260), (101, 205660), (113, 183820), (130, 159782), (140, 148369), (182, 114130), (202, 102830), (226, 91910), (260, 79891), (364, 57065), (404, 51415), (452, 45955), (455, 45652), (505, 41132), (565, 36764), (707, 29380), (791, 26260), (910, 22826), (1010, 20566), (1130, 18382), (1313, 15820), (1414, 14690), (1469, 14140), (1582, 13130), (1820, 11413), (2020, 10283), (2260, 9191), (2626, 7910), (2828, 7345), (2938, 7070), (3164, 6565), (3535, 5876), (3955, 5252)]