21641488

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{122963}}^1$

素因数の和:122982

約数の個数: 20

約数和(自身を含む): 45742608

約数和(自身を除く): 24101120

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 122963, 245926, 491852, 983704, 1352593, 1967408, 2705186, 5410372, 10820744, 21641488]

約数ペア:

[(1, 21641488), (2, 10820744), (4, 5410372), (8, 2705186), (11, 1967408), (16, 1352593), (22, 983704), (44, 491852), (88, 245926), (176, 122963)]