19973715

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 33073920

約数和(自身を除く): 13100205

約数列:

[1, 3, 5, 15, 43, 129, 173, 179, 215, 519, 537, 645, 865, 895, 2595, 2685, 7439, 7697, 22317, 23091, 30967, 37195, 38485, 92901, 111585, 115455, 154835, 464505, 1331581, 3994743, 6657905, 19973715]

約数ペア:

[(1, 19973715), (3, 6657905), (5, 3994743), (15, 1331581), (43, 464505), (129, 154835), (173, 115455), (179, 111585), (215, 92901), (519, 38485), (537, 37195), (645, 30967), (865, 23091), (895, 22317), (2595, 7697), (2685, 7439)]