20129949

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 15512931

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 67, 133, 171, 201, 251, 399, 469, 603, 753, 1197, 1273, 1407, 1757, 2259, 3819, 4221, 4769, 5271, 8911, 11457, 14307, 15813, 16817, 26733, 33383, 42921, 50451, 80199, 100149, 117719, 151353, 300447, 319523, 353157, 958569, 1059471, 2236661, 2875707, 6709983, 20129949]

約数ペア:

[(1, 20129949), (3, 6709983), (7, 2875707), (9, 2236661), (19, 1059471), (21, 958569), (57, 353157), (63, 319523), (67, 300447), (133, 151353), (171, 117719), (201, 100149), (251, 80199), (399, 50451), (469, 42921), (603, 33383), (753, 26733), (1197, 16817), (1273, 15813), (1407, 14307), (1757, 11457), (2259, 8911), (3819, 5271), (4221, 4769)]