21853740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{797}}^1$

素因数の和:1266

約数の個数: 48

約数和(自身を含む): 61401312

約数和(自身を除く): 39547572

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 457, 797, 914, 1371, 1594, 1828, 2285, 2391, 2742, 3188, 3985, 4570, 4782, 5484, 6855, 7970, 9140, 9564, 11955, 13710, 15940, 23910, 27420, 47820, 364229, 728458, 1092687, 1456916, 1821145, 2185374, 3642290, 4370748, 5463435, 7284580, 10926870, 21853740]

約数ペア:

[(1, 21853740), (2, 10926870), (3, 7284580), (4, 5463435), (5, 4370748), (6, 3642290), (10, 2185374), (12, 1821145), (15, 1456916), (20, 1092687), (30, 728458), (60, 364229), (457, 47820), (797, 27420), (914, 23910), (1371, 15940), (1594, 13710), (1828, 11955), (2285, 9564), (2391, 9140), (2742, 7970), (3188, 6855), (3985, 5484), (4570, 4782)]