20980652

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4007}}^1$

素因数の和:4046

約数の個数: 48

約数和(自身を含む): 48480768

約数和(自身を除く): 27500116

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 4007, 5236, 8014, 16028, 28049, 44077, 56098, 68119, 88154, 112196, 136238, 176308, 272476, 308539, 476833, 617078, 749309, 953666, 1234156, 1498618, 1907332, 2997236, 5245163, 10490326, 20980652]

約数ペア:

[(1, 20980652), (2, 10490326), (4, 5245163), (7, 2997236), (11, 1907332), (14, 1498618), (17, 1234156), (22, 953666), (28, 749309), (34, 617078), (44, 476833), (68, 308539), (77, 272476), (119, 176308), (154, 136238), (187, 112196), (238, 88154), (308, 68119), (374, 56098), (476, 44077), (748, 28049), (1309, 16028), (2618, 8014), (4007, 5236)]