81696720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{6947}}^1$

素因数の和:6977

約数の個数: 120

約数和(自身を含む): 294650784

約数和(自身を除く): 212954064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 6947, 11760, 13894, 20841, 27788, 34735, 41682, 48629, 55576, 69470, 83364, 97258, 104205, 111152, 138940, 145887, 166728, 194516, 208410, 243145, 277880, 291774, 333456, 340403, 389032, 416820, 486290, 555760, 583548, 680806, 729435, 778064, 833640, 972580, 1021209, 1167096, 1361612, 1458870, 1667280, 1702015, 1945160, 2042418, 2334192, 2723224, 2917740, 3404030, 3890320, 4084836, 5106045, 5446448, 5835480, 6808060, 8169672, 10212090, 11670960, 13616120, 16339344, 20424180, 27232240, 40848360, 81696720]

約数ペア:

[(1, 81696720), (2, 40848360), (3, 27232240), (4, 20424180), (5, 16339344), (6, 13616120), (7, 11670960), (8, 10212090), (10, 8169672), (12, 6808060), (14, 5835480), (15, 5446448), (16, 5106045), (20, 4084836), (21, 3890320), (24, 3404030), (28, 2917740), (30, 2723224), (35, 2334192), (40, 2042418), (42, 1945160), (48, 1702015), (49, 1667280), (56, 1458870), (60, 1361612), (70, 1167096), (80, 1021209), (84, 972580), (98, 833640), (105, 778064), (112, 729435), (120, 680806), (140, 583548), (147, 555760), (168, 486290), (196, 416820), (210, 389032), (240, 340403), (245, 333456), (280, 291774), (294, 277880), (336, 243145), (392, 208410), (420, 194516), (490, 166728), (560, 145887), (588, 138940), (735, 111152), (784, 104205), (840, 97258), (980, 83364), (1176, 69470), (1470, 55576), (1680, 48629), (1960, 41682), (2352, 34735), (2940, 27788), (3920, 20841), (5880, 13894), (6947, 11760)]