19798737

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 31460352

約数和(自身を除く): 11661615

約数列:

[1, 3, 7, 21, 37, 83, 111, 249, 259, 307, 581, 777, 921, 1743, 2149, 3071, 6447, 9213, 11359, 21497, 25481, 34077, 64491, 76443, 79513, 178367, 238539, 535101, 942797, 2828391, 6599579, 19798737]

約数ペア:

[(1, 19798737), (3, 6599579), (7, 2828391), (21, 942797), (37, 535101), (83, 238539), (111, 178367), (249, 79513), (259, 76443), (307, 64491), (581, 34077), (777, 25481), (921, 21497), (1743, 11359), (2149, 9213), (3071, 6447)]