21638204

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2083}}^1$

素因数の和:2154

約数の個数: 36

約数和(自身を含む): 44901864

約数和(自身を除く): 23263660

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 2083, 2597, 4166, 5194, 8332, 10388, 14581, 29162, 58324, 102067, 110399, 204134, 220798, 408268, 441596, 772793, 1545586, 3091172, 5409551, 10819102, 21638204]

約数ペア:

[(1, 21638204), (2, 10819102), (4, 5409551), (7, 3091172), (14, 1545586), (28, 772793), (49, 441596), (53, 408268), (98, 220798), (106, 204134), (196, 110399), (212, 102067), (371, 58324), (742, 29162), (1484, 14581), (2083, 10388), (2597, 8332), (4166, 5194)]