21417328

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5333}}^1$

素因数の和:5592

約数の個数: 20

約数和(自身を含む): 41669208

約数和(自身を除く): 20251880

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5333, 10666, 21332, 42664, 85328, 1338583, 2677166, 5354332, 10708664, 21417328]

約数ペア:

[(1, 21417328), (2, 10708664), (4, 5354332), (8, 2677166), (16, 1338583), (251, 85328), (502, 42664), (1004, 21332), (2008, 10666), (4016, 5333)]