68433880

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 159408000

約数和(自身を除く): 90974120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 89, 94, 178, 188, 235, 356, 376, 409, 445, 470, 712, 818, 890, 940, 1636, 1780, 1880, 2045, 3272, 3560, 4090, 4183, 8180, 8366, 16360, 16732, 19223, 20915, 33464, 36401, 38446, 41830, 72802, 76892, 83660, 96115, 145604, 153784, 167320, 182005, 192230, 291208, 364010, 384460, 728020, 768920, 1456040, 1710847, 3421694, 6843388, 8554235, 13686776, 17108470, 34216940, 68433880]

約数ペア:

[(1, 68433880), (2, 34216940), (4, 17108470), (5, 13686776), (8, 8554235), (10, 6843388), (20, 3421694), (40, 1710847), (47, 1456040), (89, 768920), (94, 728020), (178, 384460), (188, 364010), (235, 291208), (356, 192230), (376, 182005), (409, 167320), (445, 153784), (470, 145604), (712, 96115), (818, 83660), (890, 76892), (940, 72802), (1636, 41830), (1780, 38446), (1880, 36401), (2045, 33464), (3272, 20915), (3560, 19223), (4090, 16732), (4183, 16360), (8180, 8366)]