21541664

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22911136

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 116, 139, 167, 232, 278, 334, 464, 556, 668, 928, 1112, 1336, 2224, 2672, 4031, 4448, 4843, 5344, 8062, 9686, 16124, 19372, 23213, 32248, 38744, 46426, 64496, 77488, 92852, 128992, 154976, 185704, 371408, 673177, 742816, 1346354, 2692708, 5385416, 10770832, 21541664]

約数ペア:

[(1, 21541664), (2, 10770832), (4, 5385416), (8, 2692708), (16, 1346354), (29, 742816), (32, 673177), (58, 371408), (116, 185704), (139, 154976), (167, 128992), (232, 92852), (278, 77488), (334, 64496), (464, 46426), (556, 38744), (668, 32248), (928, 23213), (1112, 19372), (1336, 16124), (2224, 9686), (2672, 8062), (4031, 5344), (4448, 4843)]