19815939

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 34201440

約数和(自身を除く): 14385501

約数列:

[1, 3, 9, 11, 13, 33, 39, 89, 99, 117, 143, 173, 267, 429, 519, 801, 979, 1157, 1287, 1557, 1903, 2249, 2937, 3471, 5709, 6747, 8811, 10413, 12727, 15397, 17127, 20241, 24739, 38181, 46191, 74217, 114543, 138573, 169367, 200161, 222651, 508101, 600483, 1524303, 1801449, 2201771, 6605313, 19815939]

約数ペア:

[(1, 19815939), (3, 6605313), (9, 2201771), (11, 1801449), (13, 1524303), (33, 600483), (39, 508101), (89, 222651), (99, 200161), (117, 169367), (143, 138573), (173, 114543), (267, 74217), (429, 46191), (519, 38181), (801, 24739), (979, 20241), (1157, 17127), (1287, 15397), (1557, 12727), (1903, 10413), (2249, 8811), (2937, 6747), (3471, 5709)]