21490744

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{2371}}^1$

素因数の和:2491

約数の個数: 32

約数和(自身を含む): 44403840

約数和(自身を除く): 22913096

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 103, 206, 412, 824, 1133, 2266, 2371, 4532, 4742, 9064, 9484, 18968, 26081, 52162, 104324, 208648, 244213, 488426, 976852, 1953704, 2686343, 5372686, 10745372, 21490744]

約数ペア:

[(1, 21490744), (2, 10745372), (4, 5372686), (8, 2686343), (11, 1953704), (22, 976852), (44, 488426), (88, 244213), (103, 208648), (206, 104324), (412, 52162), (824, 26081), (1133, 18968), (2266, 9484), (2371, 9064), (4532, 4742)]