18789968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:963

約数の個数: 40

約数和(自身を含む): 38497536

約数和(自身を除く): 19707568

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 881, 1333, 1762, 2666, 3524, 5332, 7048, 10664, 14096, 21328, 27311, 37883, 54622, 75766, 109244, 151532, 218488, 303064, 436976, 606128, 1174373, 2348746, 4697492, 9394984, 18789968]

約数ペア:

[(1, 18789968), (2, 9394984), (4, 4697492), (8, 2348746), (16, 1174373), (31, 606128), (43, 436976), (62, 303064), (86, 218488), (124, 151532), (172, 109244), (248, 75766), (344, 54622), (496, 37883), (688, 27311), (881, 21328), (1333, 14096), (1762, 10664), (2666, 7048), (3524, 5332)]