21139641

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{971}}^1$

素因数の和:1077

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 10703079

約数列:

[1, 3, 9, 41, 59, 123, 177, 369, 531, 971, 2419, 2913, 7257, 8739, 21771, 39811, 57289, 119433, 171867, 358299, 515601, 2348849, 7046547, 21139641]

約数ペア:

[(1, 21139641), (3, 7046547), (9, 2348849), (41, 515601), (59, 358299), (123, 171867), (177, 119433), (369, 57289), (531, 39811), (971, 21771), (2419, 8739), (2913, 7257)]