19813619

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 5733133

約数列:

[1, 7, 17, 31, 41, 119, 131, 217, 287, 527, 697, 917, 1271, 2227, 3689, 4061, 4879, 5371, 8897, 15589, 21607, 28427, 37597, 69037, 91307, 151249, 166501, 483259, 639149, 1165507, 2830517, 19813619]

約数ペア:

[(1, 19813619), (7, 2830517), (17, 1165507), (31, 639149), (41, 483259), (119, 166501), (131, 151249), (217, 91307), (287, 69037), (527, 37597), (697, 28427), (917, 21607), (1271, 15589), (2227, 8897), (3689, 5371), (4061, 4879)]