20744724

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 65899904

約数和(自身を除く): 45155180

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 13, 14, 21, 22, 26, 28, 33, 39, 42, 44, 52, 66, 77, 78, 84, 91, 121, 132, 143, 154, 156, 157, 182, 231, 242, 273, 286, 308, 314, 363, 364, 429, 462, 471, 484, 546, 572, 628, 726, 847, 858, 924, 942, 1001, 1092, 1099, 1452, 1573, 1694, 1716, 1727, 1884, 2002, 2041, 2198, 2541, 3003, 3146, 3297, 3388, 3454, 4004, 4082, 4396, 4719, 5082, 5181, 6006, 6123, 6292, 6594, 6908, 8164, 9438, 10164, 10362, 11011, 12012, 12089, 12246, 13188, 14287, 18876, 18997, 20724, 22022, 22451, 24178, 24492, 28574, 33033, 36267, 37994, 42861, 44044, 44902, 48356, 56991, 57148, 66066, 67353, 72534, 75988, 85722, 89804, 113982, 132132, 132979, 134706, 145068, 157157, 171444, 227964, 246961, 265958, 269412, 314314, 398937, 471471, 493922, 531916, 628628, 740883, 797874, 942942, 987844, 1481766, 1595748, 1728727, 1885884, 2963532, 3457454, 5186181, 6914908, 10372362, 20744724]

約数ペア:

[(1, 20744724), (2, 10372362), (3, 6914908), (4, 5186181), (6, 3457454), (7, 2963532), (11, 1885884), (12, 1728727), (13, 1595748), (14, 1481766), (21, 987844), (22, 942942), (26, 797874), (28, 740883), (33, 628628), (39, 531916), (42, 493922), (44, 471471), (52, 398937), (66, 314314), (77, 269412), (78, 265958), (84, 246961), (91, 227964), (121, 171444), (132, 157157), (143, 145068), (154, 134706), (156, 132979), (157, 132132), (182, 113982), (231, 89804), (242, 85722), (273, 75988), (286, 72534), (308, 67353), (314, 66066), (363, 57148), (364, 56991), (429, 48356), (462, 44902), (471, 44044), (484, 42861), (546, 37994), (572, 36267), (628, 33033), (726, 28574), (847, 24492), (858, 24178), (924, 22451), (942, 22022), (1001, 20724), (1092, 18997), (1099, 18876), (1452, 14287), (1573, 13188), (1694, 12246), (1716, 12089), (1727, 12012), (1884, 11011), (2002, 10362), (2041, 10164), (2198, 9438), (2541, 8164), (3003, 6908), (3146, 6594), (3297, 6292), (3388, 6123), (3454, 6006), (4004, 5181), (4082, 5082), (4396, 4719)]