20869696

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 56

約数和(自身を含む): 43663616

約数和(自身を除く): 22793920

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 67, 124, 134, 157, 248, 268, 314, 496, 536, 628, 992, 1072, 1256, 1984, 2077, 2144, 2512, 4154, 4288, 4867, 5024, 8308, 9734, 10048, 10519, 16616, 19468, 21038, 33232, 38936, 42076, 66464, 77872, 84152, 132928, 155744, 168304, 311488, 326089, 336608, 652178, 673216, 1304356, 2608712, 5217424, 10434848, 20869696]

約数ペア:

[(1, 20869696), (2, 10434848), (4, 5217424), (8, 2608712), (16, 1304356), (31, 673216), (32, 652178), (62, 336608), (64, 326089), (67, 311488), (124, 168304), (134, 155744), (157, 132928), (248, 84152), (268, 77872), (314, 66464), (496, 42076), (536, 38936), (628, 33232), (992, 21038), (1072, 19468), (1256, 16616), (1984, 10519), (2077, 10048), (2144, 9734), (2512, 8308), (4154, 5024), (4288, 4867)]