155220705

素因数分解:

$3^4\times 5^1\times {\mathrm{383261}}^1$

素因数の和:383278

約数の個数: 20

約数和(自身を含む): 278248212

約数和(自身を除く): 123027507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 383261, 1149783, 1916305, 3449349, 5748915, 10348047, 17246745, 31044141, 51740235, 155220705]

約数ペア:

[(1, 155220705), (3, 51740235), (5, 31044141), (9, 17246745), (15, 10348047), (27, 5748915), (45, 3449349), (81, 1916305), (135, 1149783), (405, 383261)]