20225709

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 35850880

約数和(自身を除く): 15625171

約数列:

[1, 3, 7, 9, 19, 21, 57, 61, 63, 133, 171, 183, 277, 399, 427, 549, 831, 1159, 1197, 1281, 1939, 2493, 3477, 3843, 5263, 5817, 8113, 10431, 15789, 16897, 17451, 24339, 36841, 47367, 50691, 73017, 110523, 118279, 152073, 321043, 331569, 354837, 963129, 1064511, 2247301, 2889387, 6741903, 20225709]

約数ペア:

[(1, 20225709), (3, 6741903), (7, 2889387), (9, 2247301), (19, 1064511), (21, 963129), (57, 354837), (61, 331569), (63, 321043), (133, 152073), (171, 118279), (183, 110523), (277, 73017), (399, 50691), (427, 47367), (549, 36841), (831, 24339), (1159, 17451), (1197, 16897), (1281, 15789), (1939, 10431), (2493, 8113), (3477, 5817), (3843, 5263)]