19842976

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:365

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 21138272

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 83, 124, 166, 241, 248, 332, 482, 496, 664, 964, 992, 1328, 1928, 2573, 2656, 3856, 5146, 7471, 7712, 10292, 14942, 20003, 20584, 29884, 40006, 41168, 59768, 80012, 82336, 119536, 160024, 239072, 320048, 620093, 640096, 1240186, 2480372, 4960744, 9921488, 19842976]

約数ペア:

[(1, 19842976), (2, 9921488), (4, 4960744), (8, 2480372), (16, 1240186), (31, 640096), (32, 620093), (62, 320048), (83, 239072), (124, 160024), (166, 119536), (241, 82336), (248, 80012), (332, 59768), (482, 41168), (496, 40006), (664, 29884), (964, 20584), (992, 20003), (1328, 14942), (1928, 10292), (2573, 7712), (2656, 7471), (3856, 5146)]