20104760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 52103520

約数和(自身を除く): 31998760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 41, 46, 52, 65, 82, 92, 104, 115, 130, 164, 184, 205, 230, 260, 299, 328, 410, 460, 520, 533, 598, 820, 920, 943, 1066, 1196, 1495, 1640, 1681, 1886, 2132, 2392, 2665, 2990, 3362, 3772, 4264, 4715, 5330, 5980, 6724, 7544, 8405, 9430, 10660, 11960, 12259, 13448, 16810, 18860, 21320, 21853, 24518, 33620, 37720, 38663, 43706, 49036, 61295, 67240, 77326, 87412, 98072, 109265, 122590, 154652, 174824, 193315, 218530, 245180, 309304, 386630, 437060, 490360, 502619, 773260, 874120, 1005238, 1546520, 2010476, 2513095, 4020952, 5026190, 10052380, 20104760]

約数ペア:

[(1, 20104760), (2, 10052380), (4, 5026190), (5, 4020952), (8, 2513095), (10, 2010476), (13, 1546520), (20, 1005238), (23, 874120), (26, 773260), (40, 502619), (41, 490360), (46, 437060), (52, 386630), (65, 309304), (82, 245180), (92, 218530), (104, 193315), (115, 174824), (130, 154652), (164, 122590), (184, 109265), (205, 98072), (230, 87412), (260, 77326), (299, 67240), (328, 61295), (410, 49036), (460, 43706), (520, 38663), (533, 37720), (598, 33620), (820, 24518), (920, 21853), (943, 21320), (1066, 18860), (1196, 16810), (1495, 13448), (1640, 12259), (1681, 11960), (1886, 10660), (2132, 9430), (2392, 8405), (2665, 7544), (2990, 6724), (3362, 5980), (3772, 5330), (4264, 4715)]