81691440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{340381}}^1$

素因数の和:340397

約数の個数: 40

約数和(自身を含む): 253244208

約数和(自身を除く): 171552768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 340381, 680762, 1021143, 1361524, 1701905, 2042286, 2723048, 3403810, 4084572, 5105715, 5446096, 6807620, 8169144, 10211430, 13615240, 16338288, 20422860, 27230480, 40845720, 81691440]

約数ペア:

[(1, 81691440), (2, 40845720), (3, 27230480), (4, 20422860), (5, 16338288), (6, 13615240), (8, 10211430), (10, 8169144), (12, 6807620), (15, 5446096), (16, 5105715), (20, 4084572), (24, 3403810), (30, 2723048), (40, 2042286), (48, 1701905), (60, 1361524), (80, 1021143), (120, 680762), (240, 340381)]