21312908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{1621}}^1$

素因数の和:1817

約数の個数: 24

約数和(自身を含む): 39511920

約数和(自身を除く): 18199012

約数列:

[1, 2, 4, 19, 38, 76, 173, 346, 692, 1621, 3242, 3287, 6484, 6574, 13148, 30799, 61598, 123196, 280433, 560866, 1121732, 5328227, 10656454, 21312908]

約数ペア:

[(1, 21312908), (2, 10656454), (4, 5328227), (19, 1121732), (38, 560866), (76, 280433), (173, 123196), (346, 61598), (692, 30799), (1621, 13148), (3242, 6574), (3287, 6484)]