19787607

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 35077120

約数和(自身を除く): 15289513

約数列:

[1, 3, 7, 9, 19, 21, 57, 61, 63, 133, 171, 183, 271, 399, 427, 549, 813, 1159, 1197, 1281, 1897, 2439, 3477, 3843, 5149, 5691, 8113, 10431, 15447, 16531, 17073, 24339, 36043, 46341, 49593, 73017, 108129, 115717, 148779, 314089, 324387, 347151, 942267, 1041453, 2198623, 2826801, 6595869, 19787607]

約数ペア:

[(1, 19787607), (3, 6595869), (7, 2826801), (9, 2198623), (19, 1041453), (21, 942267), (57, 347151), (61, 324387), (63, 314089), (133, 148779), (171, 115717), (183, 108129), (271, 73017), (399, 49593), (427, 46341), (549, 36043), (813, 24339), (1159, 17073), (1197, 16531), (1281, 15447), (1897, 10431), (2439, 8113), (3477, 5691), (3843, 5149)]