128480985

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18661}}^1$

素因数の和:18695

約数の個数: 40

約数和(自身を含む): 243875016

約数和(自身を除く): 115394031

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 6885, 18661, 55983, 93305, 167949, 279915, 317237, 503847, 839745, 951711, 1511541, 1586185, 2519235, 2855133, 4758555, 7557705, 8565399, 14275665, 25696197, 42826995, 128480985]

約数ペア:

[(1, 128480985), (3, 42826995), (5, 25696197), (9, 14275665), (15, 8565399), (17, 7557705), (27, 4758555), (45, 2855133), (51, 2519235), (81, 1586185), (85, 1511541), (135, 951711), (153, 839745), (255, 503847), (405, 317237), (459, 279915), (765, 167949), (1377, 93305), (2295, 55983), (6885, 18661)]