19207455

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 31874304

約数和(自身を除く): 12666849

約数列:

[1, 3, 5, 15, 43, 97, 129, 215, 291, 307, 485, 645, 921, 1455, 1535, 4171, 4605, 12513, 13201, 20855, 29779, 39603, 62565, 66005, 89337, 148895, 198015, 446685, 1280497, 3841491, 6402485, 19207455]

約数ペア:

[(1, 19207455), (3, 6402485), (5, 3841491), (15, 1280497), (43, 446685), (97, 198015), (129, 148895), (215, 89337), (291, 66005), (307, 62565), (485, 39603), (645, 29779), (921, 20855), (1455, 13201), (1535, 12513), (4171, 4605)]