20402907

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{853}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 33449472

約数和(自身を除く): 13046565

約数列:

[1, 3, 7, 17, 21, 51, 67, 119, 201, 357, 469, 853, 1139, 1407, 2559, 3417, 5971, 7973, 14501, 17913, 23919, 43503, 57151, 101507, 171453, 304521, 400057, 971567, 1200171, 2914701, 6800969, 20402907]

約数ペア:

[(1, 20402907), (3, 6800969), (7, 2914701), (17, 1200171), (21, 971567), (51, 400057), (67, 304521), (119, 171453), (201, 101507), (357, 57151), (469, 43503), (853, 23919), (1139, 17913), (1407, 14501), (2559, 7973), (3417, 5971)]