18994444

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 39854080

約数和(自身を除く): 20859636

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 79, 124, 158, 217, 277, 316, 434, 553, 554, 868, 1106, 1108, 1939, 2212, 2449, 3878, 4898, 7756, 8587, 9796, 17143, 17174, 21883, 34286, 34348, 43766, 60109, 68572, 87532, 120218, 153181, 240436, 306362, 612724, 678373, 1356746, 2713492, 4748611, 9497222, 18994444]

約数ペア:

[(1, 18994444), (2, 9497222), (4, 4748611), (7, 2713492), (14, 1356746), (28, 678373), (31, 612724), (62, 306362), (79, 240436), (124, 153181), (158, 120218), (217, 87532), (277, 68572), (316, 60109), (434, 43766), (553, 34348), (554, 34286), (868, 21883), (1106, 17174), (1108, 17143), (1939, 9796), (2212, 8587), (2449, 7756), (3878, 4898)]