19867744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 42526512

約数和(自身を除く): 22658768

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 163, 208, 293, 326, 416, 586, 652, 1172, 1304, 2119, 2344, 2608, 3809, 4238, 4688, 5216, 7618, 8476, 9376, 15236, 16952, 30472, 33904, 47759, 60944, 67808, 95518, 121888, 191036, 382072, 620867, 764144, 1241734, 1528288, 2483468, 4966936, 9933872, 19867744]

約数ペア:

[(1, 19867744), (2, 9933872), (4, 4966936), (8, 2483468), (13, 1528288), (16, 1241734), (26, 764144), (32, 620867), (52, 382072), (104, 191036), (163, 121888), (208, 95518), (293, 67808), (326, 60944), (416, 47759), (586, 33904), (652, 30472), (1172, 16952), (1304, 15236), (2119, 9376), (2344, 8476), (2608, 7618), (3809, 5216), (4238, 4688)]