20898176

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1$

素因数の和:707

約数の個数: 64

約数和(自身を含む): 47266800

約数和(自身を除く): 26368624

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 304, 416, 494, 608, 661, 832, 988, 1216, 1322, 1664, 1976, 2432, 2644, 3952, 5288, 7904, 8593, 10576, 12559, 15808, 17186, 21152, 25118, 31616, 34372, 42304, 50236, 68744, 84608, 100472, 137488, 163267, 200944, 274976, 326534, 401888, 549952, 653068, 803776, 1099904, 1306136, 1607552, 2612272, 5224544, 10449088, 20898176]

約数ペア:

[(1, 20898176), (2, 10449088), (4, 5224544), (8, 2612272), (13, 1607552), (16, 1306136), (19, 1099904), (26, 803776), (32, 653068), (38, 549952), (52, 401888), (64, 326534), (76, 274976), (104, 200944), (128, 163267), (152, 137488), (208, 100472), (247, 84608), (304, 68744), (416, 50236), (494, 42304), (608, 34372), (661, 31616), (832, 25118), (988, 21152), (1216, 17186), (1322, 15808), (1664, 12559), (1976, 10576), (2432, 8593), (2644, 7904), (3952, 5288)]