20520888

素因数分解:

$2^3\times 3^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 53032320

約数和(自身を除く): 32511432

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 61, 107, 122, 131, 183, 214, 244, 262, 321, 366, 393, 428, 488, 524, 642, 732, 786, 856, 1048, 1284, 1464, 1572, 2568, 3144, 6527, 7991, 13054, 14017, 15982, 19581, 23973, 26108, 28034, 31964, 39162, 42051, 47946, 52216, 56068, 63928, 78324, 84102, 95892, 112136, 156648, 168204, 191784, 336408, 855037, 1710074, 2565111, 3420148, 5130222, 6840296, 10260444, 20520888]

約数ペア:

[(1, 20520888), (2, 10260444), (3, 6840296), (4, 5130222), (6, 3420148), (8, 2565111), (12, 1710074), (24, 855037), (61, 336408), (107, 191784), (122, 168204), (131, 156648), (183, 112136), (214, 95892), (244, 84102), (262, 78324), (321, 63928), (366, 56068), (393, 52216), (428, 47946), (488, 42051), (524, 39162), (642, 31964), (732, 28034), (786, 26108), (856, 23973), (1048, 19581), (1284, 15982), (1464, 14017), (1572, 13054), (2568, 7991), (3144, 6527)]