20181618508

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1\times {\mathrm{2633}}^1$

素因数の和:3042

約数の個数: 48

約数和(自身を含む): 36273593664

約数和(自身を除く): 16091975156

約数列:

[1, 2, 4, 71, 137, 142, 197, 274, 284, 394, 548, 788, 2633, 5266, 9727, 10532, 13987, 19454, 26989, 27974, 38908, 53978, 55948, 107956, 186943, 360721, 373886, 518701, 721442, 747772, 1037402, 1442884, 1916219, 2074804, 3832438, 7664876, 25611191, 36827771, 51222382, 71062037, 73655542, 102444764, 142124074, 147311084, 284248148, 5045404627, 10090809254, 20181618508]

約数ペア:

[(1, 20181618508), (2, 10090809254), (4, 5045404627), (71, 284248148), (137, 147311084), (142, 142124074), (197, 102444764), (274, 73655542), (284, 71062037), (394, 51222382), (548, 36827771), (788, 25611191), (2633, 7664876), (5266, 3832438), (9727, 2074804), (10532, 1916219), (13987, 1442884), (19454, 1037402), (26989, 747772), (27974, 721442), (38908, 518701), (53978, 373886), (55948, 360721), (107956, 186943)]