128921800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1297}}^1$

素因数の和:1391

約数の個数: 96

約数和(自身を含む): 347656320

約数和(自身を除く): 218734520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 71, 100, 140, 142, 175, 200, 280, 284, 350, 355, 497, 568, 700, 710, 994, 1297, 1400, 1420, 1775, 1988, 2485, 2594, 2840, 3550, 3976, 4970, 5188, 6485, 7100, 9079, 9940, 10376, 12425, 12970, 14200, 18158, 19880, 24850, 25940, 32425, 36316, 45395, 49700, 51880, 64850, 72632, 90790, 92087, 99400, 129700, 181580, 184174, 226975, 259400, 363160, 368348, 453950, 460435, 644609, 736696, 907900, 920870, 1289218, 1815800, 1841740, 2302175, 2578436, 3223045, 3683480, 4604350, 5156872, 6446090, 9208700, 12892180, 16115225, 18417400, 25784360, 32230450, 64460900, 128921800]

約数ペア:

[(1, 128921800), (2, 64460900), (4, 32230450), (5, 25784360), (7, 18417400), (8, 16115225), (10, 12892180), (14, 9208700), (20, 6446090), (25, 5156872), (28, 4604350), (35, 3683480), (40, 3223045), (50, 2578436), (56, 2302175), (70, 1841740), (71, 1815800), (100, 1289218), (140, 920870), (142, 907900), (175, 736696), (200, 644609), (280, 460435), (284, 453950), (350, 368348), (355, 363160), (497, 259400), (568, 226975), (700, 184174), (710, 181580), (994, 129700), (1297, 99400), (1400, 92087), (1420, 90790), (1775, 72632), (1988, 64850), (2485, 51880), (2594, 49700), (2840, 45395), (3550, 36316), (3976, 32425), (4970, 25940), (5188, 24850), (6485, 19880), (7100, 18158), (9079, 14200), (9940, 12970), (10376, 12425)]