21100832

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22444768

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 89, 124, 178, 239, 248, 356, 478, 496, 712, 956, 992, 1424, 1912, 2759, 2848, 3824, 5518, 7409, 7648, 11036, 14818, 21271, 22072, 29636, 42542, 44144, 59272, 85084, 88288, 118544, 170168, 237088, 340336, 659401, 680672, 1318802, 2637604, 5275208, 10550416, 21100832]

約数ペア:

[(1, 21100832), (2, 10550416), (4, 5275208), (8, 2637604), (16, 1318802), (31, 680672), (32, 659401), (62, 340336), (89, 237088), (124, 170168), (178, 118544), (239, 88288), (248, 85084), (356, 59272), (478, 44144), (496, 42542), (712, 29636), (956, 22072), (992, 21271), (1424, 14818), (1912, 11036), (2759, 7648), (2848, 7409), (3824, 5518)]