221566191

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{521}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 377042688

約数和(自身を除く): 155476497

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 263, 521, 539, 789, 1563, 1617, 1841, 2893, 3647, 5523, 5731, 8679, 10941, 12887, 17193, 20251, 25529, 38661, 40117, 60753, 76587, 120351, 137023, 141757, 280819, 411069, 425271, 842457, 959161, 1507253, 2877483, 4521759, 6714127, 10550771, 20142381, 31652313, 73855397, 221566191]

約数ペア:

[(1, 221566191), (3, 73855397), (7, 31652313), (11, 20142381), (21, 10550771), (33, 6714127), (49, 4521759), (77, 2877483), (147, 1507253), (231, 959161), (263, 842457), (521, 425271), (539, 411069), (789, 280819), (1563, 141757), (1617, 137023), (1841, 120351), (2893, 76587), (3647, 60753), (5523, 40117), (5731, 38661), (8679, 25529), (10941, 20251), (12887, 17193)]