21816640

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{863}}^1$

素因数の和:959

約数の個数: 56

約数和(自身を含む): 52669440

約数和(自身を除く): 30852800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 863, 1264, 1580, 1726, 2528, 3160, 3452, 4315, 5056, 6320, 6904, 8630, 12640, 13808, 17260, 25280, 27616, 34520, 55232, 68177, 69040, 136354, 138080, 272708, 276160, 340885, 545416, 681770, 1090832, 1363540, 2181664, 2727080, 4363328, 5454160, 10908320, 21816640]

約数ペア:

[(1, 21816640), (2, 10908320), (4, 5454160), (5, 4363328), (8, 2727080), (10, 2181664), (16, 1363540), (20, 1090832), (32, 681770), (40, 545416), (64, 340885), (79, 276160), (80, 272708), (158, 138080), (160, 136354), (316, 69040), (320, 68177), (395, 55232), (632, 34520), (790, 27616), (863, 25280), (1264, 17260), (1580, 13808), (1726, 12640), (2528, 8630), (3160, 6904), (3452, 6320), (4315, 5056)]