820161716

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 1620386880

約数和(自身を除く): 800225164

約数列:

[1, 2, 4, 11, 22, 44, 73, 121, 139, 146, 167, 242, 278, 292, 334, 484, 556, 668, 803, 1529, 1606, 1837, 3058, 3212, 3674, 6116, 7348, 8833, 10147, 12191, 16819, 17666, 20207, 20294, 23213, 24382, 33638, 35332, 40414, 40588, 46426, 48764, 67276, 80828, 92852, 111617, 134101, 223234, 255343, 268202, 446468, 510686, 536404, 1021372, 1227787, 1475111, 1694549, 2455574, 2808773, 2950222, 3389098, 4911148, 5617546, 5900444, 6778196, 11235092, 18640039, 37280078, 74560156, 205040429, 410080858, 820161716]

約数ペア:

[(1, 820161716), (2, 410080858), (4, 205040429), (11, 74560156), (22, 37280078), (44, 18640039), (73, 11235092), (121, 6778196), (139, 5900444), (146, 5617546), (167, 4911148), (242, 3389098), (278, 2950222), (292, 2808773), (334, 2455574), (484, 1694549), (556, 1475111), (668, 1227787), (803, 1021372), (1529, 536404), (1606, 510686), (1837, 446468), (3058, 268202), (3212, 255343), (3674, 223234), (6116, 134101), (7348, 111617), (8833, 92852), (10147, 80828), (12191, 67276), (16819, 48764), (17666, 46426), (20207, 40588), (20294, 40414), (23213, 35332), (24382, 33638)]