20270705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 31622400

約数和(自身を除く): 11351695

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 149, 161, 169, 299, 455, 745, 805, 845, 1043, 1183, 1495, 1937, 2093, 3427, 3887, 5215, 5915, 9685, 10465, 13559, 17135, 19435, 23989, 25181, 27209, 44551, 67795, 119945, 125905, 136045, 176267, 222755, 311857, 579163, 881335, 1559285, 2895815, 4054141, 20270705]

約数ペア:

[(1, 20270705), (5, 4054141), (7, 2895815), (13, 1559285), (23, 881335), (35, 579163), (65, 311857), (91, 222755), (115, 176267), (149, 136045), (161, 125905), (169, 119945), (299, 67795), (455, 44551), (745, 27209), (805, 25181), (845, 23989), (1043, 19435), (1183, 17135), (1495, 13559), (1937, 10465), (2093, 9685), (3427, 5915), (3887, 5215)]