20107997685

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{699287}}^1$

素因数の和:699375

約数の個数: 40

約数和(自身を含む): 36553182336

約数和(自身を除く): 16445184651

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 1065, 1917, 3195, 5751, 9585, 28755, 699287, 2097861, 3496435, 6293583, 10489305, 18880749, 31467915, 49649377, 56642247, 94403745, 148948131, 248246885, 283211235, 446844393, 744740655, 1340533179, 2234221965, 4021599537, 6702665895, 20107997685]

約数ペア:

[(1, 20107997685), (3, 6702665895), (5, 4021599537), (9, 2234221965), (15, 1340533179), (27, 744740655), (45, 446844393), (71, 283211235), (81, 248246885), (135, 148948131), (213, 94403745), (355, 56642247), (405, 49649377), (639, 31467915), (1065, 18880749), (1917, 10489305), (3195, 6293583), (5751, 3496435), (9585, 2097861), (28755, 699287)]