19898379

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 31624560

約数和(自身を除く): 11726181

約数列:

[1, 3, 9, 27, 29, 43, 81, 87, 129, 197, 261, 387, 591, 783, 1161, 1247, 1773, 2349, 3483, 3741, 5319, 5713, 8471, 11223, 15957, 17139, 25413, 33669, 51417, 76239, 101007, 154251, 228717, 245659, 462753, 686151, 736977, 2210931, 6632793, 19898379]

約数ペア:

[(1, 19898379), (3, 6632793), (9, 2210931), (27, 736977), (29, 686151), (43, 462753), (81, 245659), (87, 228717), (129, 154251), (197, 101007), (261, 76239), (387, 51417), (591, 33669), (783, 25413), (1161, 17139), (1247, 15957), (1773, 11223), (2349, 8471), (3483, 5713), (3741, 5319)]