19264959

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 33488928

約数和(自身を除く): 14223969

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 549, 557, 567, 1281, 1647, 1671, 3843, 3899, 4941, 5013, 11529, 11697, 15039, 33977, 34587, 35091, 45117, 101931, 105273, 237839, 305793, 315819, 713517, 917379, 2140551, 2752137, 6421653, 19264959]

約数ペア:

[(1, 19264959), (3, 6421653), (7, 2752137), (9, 2140551), (21, 917379), (27, 713517), (61, 315819), (63, 305793), (81, 237839), (183, 105273), (189, 101931), (427, 45117), (549, 35091), (557, 34587), (567, 33977), (1281, 15039), (1647, 11697), (1671, 11529), (3843, 5013), (3899, 4941)]