40209520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2$

素因数の和:131

約数の個数: 120

約数和(自身を含む): 107680608

約数和(自身を除く): 67471088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 41, 46, 52, 65, 80, 82, 92, 104, 115, 130, 164, 184, 205, 208, 230, 260, 299, 328, 368, 410, 460, 520, 533, 598, 656, 820, 920, 943, 1040, 1066, 1196, 1495, 1640, 1681, 1840, 1886, 2132, 2392, 2665, 2990, 3280, 3362, 3772, 4264, 4715, 4784, 5330, 5980, 6724, 7544, 8405, 8528, 9430, 10660, 11960, 12259, 13448, 15088, 16810, 18860, 21320, 21853, 23920, 24518, 26896, 33620, 37720, 38663, 42640, 43706, 49036, 61295, 67240, 75440, 77326, 87412, 98072, 109265, 122590, 134480, 154652, 174824, 193315, 196144, 218530, 245180, 309304, 349648, 386630, 437060, 490360, 502619, 618608, 773260, 874120, 980720, 1005238, 1546520, 1748240, 2010476, 2513095, 3093040, 4020952, 5026190, 8041904, 10052380, 20104760, 40209520]

約数ペア:

[(1, 40209520), (2, 20104760), (4, 10052380), (5, 8041904), (8, 5026190), (10, 4020952), (13, 3093040), (16, 2513095), (20, 2010476), (23, 1748240), (26, 1546520), (40, 1005238), (41, 980720), (46, 874120), (52, 773260), (65, 618608), (80, 502619), (82, 490360), (92, 437060), (104, 386630), (115, 349648), (130, 309304), (164, 245180), (184, 218530), (205, 196144), (208, 193315), (230, 174824), (260, 154652), (299, 134480), (328, 122590), (368, 109265), (410, 98072), (460, 87412), (520, 77326), (533, 75440), (598, 67240), (656, 61295), (820, 49036), (920, 43706), (943, 42640), (1040, 38663), (1066, 37720), (1196, 33620), (1495, 26896), (1640, 24518), (1681, 23920), (1840, 21853), (1886, 21320), (2132, 18860), (2392, 16810), (2665, 15088), (2990, 13448), (3280, 12259), (3362, 11960), (3772, 10660), (4264, 9430), (4715, 8528), (4784, 8405), (5330, 7544), (5980, 6724)]