20491538

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 33566400

約数和(自身を除く): 13074862

約数列:

[1, 2, 19, 38, 73, 83, 89, 146, 166, 178, 1387, 1577, 1691, 2774, 3154, 3382, 6059, 6497, 7387, 12118, 12994, 14774, 115121, 123443, 140353, 230242, 246886, 280706, 539251, 1078502, 10245769, 20491538]

約数ペア:

[(1, 20491538), (2, 10245769), (19, 1078502), (38, 539251), (73, 280706), (83, 246886), (89, 230242), (146, 140353), (166, 123443), (178, 115121), (1387, 14774), (1577, 12994), (1691, 12118), (2774, 7387), (3154, 6497), (3382, 6059)]