20956480

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1523}}^1$

素因数の和:1583

約数の個数: 56

約数和(自身を含む): 51096672

約数和(自身を除く): 30140192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1523, 1720, 2752, 3046, 3440, 6092, 6880, 7615, 12184, 13760, 15230, 24368, 30460, 48736, 60920, 65489, 97472, 121840, 130978, 243680, 261956, 327445, 487360, 523912, 654890, 1047824, 1309780, 2095648, 2619560, 4191296, 5239120, 10478240, 20956480]

約数ペア:

[(1, 20956480), (2, 10478240), (4, 5239120), (5, 4191296), (8, 2619560), (10, 2095648), (16, 1309780), (20, 1047824), (32, 654890), (40, 523912), (43, 487360), (64, 327445), (80, 261956), (86, 243680), (160, 130978), (172, 121840), (215, 97472), (320, 65489), (344, 60920), (430, 48736), (688, 30460), (860, 24368), (1376, 15230), (1523, 13760), (1720, 12184), (2752, 7615), (3046, 6880), (3440, 6092)]