255557860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1\times {\mathrm{883}}^1$

素因数の和:1420

約数の個数: 48

約数和(自身を含む): 556920000

約数和(自身を除く): 301362140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 499, 580, 883, 998, 1766, 1996, 2495, 3532, 4415, 4990, 8830, 9980, 14471, 17660, 25607, 28942, 51214, 57884, 72355, 102428, 128035, 144710, 256070, 289420, 440617, 512140, 881234, 1762468, 2203085, 4406170, 8812340, 12777893, 25555786, 51111572, 63889465, 127778930, 255557860]

約数ペア:

[(1, 255557860), (2, 127778930), (4, 63889465), (5, 51111572), (10, 25555786), (20, 12777893), (29, 8812340), (58, 4406170), (116, 2203085), (145, 1762468), (290, 881234), (499, 512140), (580, 440617), (883, 289420), (998, 256070), (1766, 144710), (1996, 128035), (2495, 102428), (3532, 72355), (4415, 57884), (4990, 51214), (8830, 28942), (9980, 25607), (14471, 17660)]