201220149

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 296231040

約数和(自身を除く): 95010891

約数列:

[1, 3, 13, 39, 59, 157, 177, 471, 557, 767, 1671, 2041, 2301, 6123, 7241, 9263, 21723, 27789, 32863, 87449, 98589, 120419, 262347, 361257, 427219, 1136837, 1281657, 3410511, 5159491, 15478473, 67073383, 201220149]

約数ペア:

[(1, 201220149), (3, 67073383), (13, 15478473), (39, 5159491), (59, 3410511), (157, 1281657), (177, 1136837), (471, 427219), (557, 361257), (767, 262347), (1671, 120419), (2041, 98589), (2301, 87449), (6123, 32863), (7241, 27789), (9263, 21723)]