19895211

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 34664448

約数和(自身を除く): 14769237

約数列:

[1, 3, 7, 9, 21, 31, 61, 63, 93, 167, 183, 217, 279, 427, 501, 549, 651, 1169, 1281, 1503, 1891, 1953, 3507, 3843, 5177, 5673, 10187, 10521, 13237, 15531, 17019, 30561, 36239, 39711, 46593, 71309, 91683, 108717, 119133, 213927, 315797, 326151, 641781, 947391, 2210579, 2842173, 6631737, 19895211]

約数ペア:

[(1, 19895211), (3, 6631737), (7, 2842173), (9, 2210579), (21, 947391), (31, 641781), (61, 326151), (63, 315797), (93, 213927), (167, 119133), (183, 108717), (217, 91683), (279, 71309), (427, 46593), (501, 39711), (549, 36239), (651, 30561), (1169, 17019), (1281, 15531), (1503, 13237), (1891, 10521), (1953, 10187), (3507, 5673), (3843, 5177)]