128867900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{811}}^1$

素因数の和:1059

約数の個数: 72

約数和(自身を含む): 321396096

約数和(自身を除く): 192528196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 227, 350, 454, 700, 811, 908, 1135, 1589, 1622, 2270, 3178, 3244, 4055, 4540, 5675, 5677, 6356, 7945, 8110, 11350, 11354, 15890, 16220, 20275, 22700, 22708, 28385, 31780, 39725, 40550, 56770, 79450, 81100, 113540, 141925, 158900, 184097, 283850, 368194, 567700, 736388, 920485, 1288679, 1840970, 2577358, 3681940, 4602425, 5154716, 6443395, 9204850, 12886790, 18409700, 25773580, 32216975, 64433950, 128867900]

約数ペア:

[(1, 128867900), (2, 64433950), (4, 32216975), (5, 25773580), (7, 18409700), (10, 12886790), (14, 9204850), (20, 6443395), (25, 5154716), (28, 4602425), (35, 3681940), (50, 2577358), (70, 1840970), (100, 1288679), (140, 920485), (175, 736388), (227, 567700), (350, 368194), (454, 283850), (700, 184097), (811, 158900), (908, 141925), (1135, 113540), (1589, 81100), (1622, 79450), (2270, 56770), (3178, 40550), (3244, 39725), (4055, 31780), (4540, 28385), (5675, 22708), (5677, 22700), (6356, 20275), (7945, 16220), (8110, 15890), (11350, 11354)]