209993985

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81869}}^1$

素因数の和:81902

約数の個数: 32

約数和(自身を含む): 392976000

約数和(自身を除く): 182982015

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 81869, 245607, 409345, 736821, 1228035, 1555511, 2210463, 3684105, 4666533, 7777555, 11052315, 13999599, 23332665, 41998797, 69997995, 209993985]

約数ペア:

[(1, 209993985), (3, 69997995), (5, 41998797), (9, 23332665), (15, 13999599), (19, 11052315), (27, 7777555), (45, 4666533), (57, 3684105), (95, 2210463), (135, 1555511), (171, 1228035), (285, 736821), (513, 409345), (855, 245607), (2565, 81869)]