18897328

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:469

約数の個数: 40

約数和(自身を含む): 38278800

約数和(自身を除く): 19381472

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 139, 232, 278, 293, 464, 556, 586, 1112, 1172, 2224, 2344, 4031, 4688, 8062, 8497, 16124, 16994, 32248, 33988, 40727, 64496, 67976, 81454, 135952, 162908, 325816, 651632, 1181083, 2362166, 4724332, 9448664, 18897328]

約数ペア:

[(1, 18897328), (2, 9448664), (4, 4724332), (8, 2362166), (16, 1181083), (29, 651632), (58, 325816), (116, 162908), (139, 135952), (232, 81454), (278, 67976), (293, 64496), (464, 40727), (556, 33988), (586, 32248), (1112, 16994), (1172, 16124), (2224, 8497), (2344, 8062), (4031, 4688)]