201991101

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{419}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 298045440

約数和(自身を除く): 96054339

約数列:

[1, 3, 13, 39, 47, 141, 263, 419, 611, 789, 1257, 1833, 3419, 5447, 10257, 12361, 16341, 19693, 37083, 59079, 110197, 160693, 256009, 330591, 482079, 768027, 1432561, 4297683, 5179259, 15537777, 67330367, 201991101]

約数ペア:

[(1, 201991101), (3, 67330367), (13, 15537777), (39, 5179259), (47, 4297683), (141, 1432561), (263, 768027), (419, 482079), (611, 330591), (789, 256009), (1257, 160693), (1833, 110197), (3419, 59079), (5447, 37083), (10257, 19693), (12361, 16341)]