21891009

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 35426304

約数和(自身を除く): 13535295

約数列:

[1, 3, 7, 21, 23, 61, 69, 161, 183, 427, 483, 743, 1281, 1403, 2229, 4209, 5201, 9821, 15603, 17089, 29463, 45323, 51267, 119623, 135969, 317261, 358869, 951783, 1042429, 3127287, 7297003, 21891009]

約数ペア:

[(1, 21891009), (3, 7297003), (7, 3127287), (21, 1042429), (23, 951783), (61, 358869), (69, 317261), (161, 135969), (183, 119623), (427, 51267), (483, 45323), (743, 29463), (1281, 17089), (1403, 15603), (2229, 9821), (4209, 5201)]