221561247

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{727}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 318689280

約数和(自身を除く): 97128033

約数列:

[1, 3, 29, 31, 87, 93, 113, 339, 727, 899, 2181, 2697, 3277, 3503, 9831, 10509, 21083, 22537, 63249, 67611, 82151, 101587, 246453, 304761, 653573, 1960719, 2382379, 2546681, 7147137, 7640043, 73853749, 221561247]

約数ペア:

[(1, 221561247), (3, 73853749), (29, 7640043), (31, 7147137), (87, 2546681), (93, 2382379), (113, 1960719), (339, 653573), (727, 304761), (899, 246453), (2181, 101587), (2697, 82151), (3277, 67611), (3503, 63249), (9831, 22537), (10509, 21083)]