128721040

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{4691}}^1$

素因数の和:4725

約数の個数: 80

約数和(自身を含む): 349084800

約数和(自身を除く): 220363760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 4691, 5488, 6860, 9382, 13720, 18764, 23455, 27440, 32837, 37528, 46910, 65674, 75056, 93820, 131348, 164185, 187640, 229859, 262696, 328370, 375280, 459718, 525392, 656740, 919436, 1149295, 1313480, 1609013, 1838872, 2298590, 2626960, 3218026, 3677744, 4597180, 6436052, 8045065, 9194360, 12872104, 16090130, 18388720, 25744208, 32180260, 64360520, 128721040]

約数ペア:

[(1, 128721040), (2, 64360520), (4, 32180260), (5, 25744208), (7, 18388720), (8, 16090130), (10, 12872104), (14, 9194360), (16, 8045065), (20, 6436052), (28, 4597180), (35, 3677744), (40, 3218026), (49, 2626960), (56, 2298590), (70, 1838872), (80, 1609013), (98, 1313480), (112, 1149295), (140, 919436), (196, 656740), (245, 525392), (280, 459718), (343, 375280), (392, 328370), (490, 262696), (560, 229859), (686, 187640), (784, 164185), (980, 131348), (1372, 93820), (1715, 75056), (1960, 65674), (2744, 46910), (3430, 37528), (3920, 32837), (4691, 27440), (5488, 23455), (6860, 18764), (9382, 13720)]