20554926

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 48854016

約数和(自身を除く): 28299090

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 61, 71, 113, 122, 142, 183, 213, 226, 339, 366, 426, 427, 497, 678, 791, 854, 994, 1281, 1491, 1582, 2373, 2562, 2982, 4331, 4746, 6893, 8023, 8662, 12993, 13786, 16046, 20679, 24069, 25986, 30317, 41358, 48138, 48251, 56161, 60634, 90951, 96502, 112322, 144753, 168483, 181902, 289506, 336966, 489403, 978806, 1468209, 2936418, 3425821, 6851642, 10277463, 20554926]

約数ペア:

[(1, 20554926), (2, 10277463), (3, 6851642), (6, 3425821), (7, 2936418), (14, 1468209), (21, 978806), (42, 489403), (61, 336966), (71, 289506), (113, 181902), (122, 168483), (142, 144753), (183, 112322), (213, 96502), (226, 90951), (339, 60634), (366, 56161), (426, 48251), (427, 48138), (497, 41358), (678, 30317), (791, 25986), (854, 24069), (994, 20679), (1281, 16046), (1491, 13786), (1582, 12993), (2373, 8662), (2562, 8023), (2982, 6893), (4331, 4746)]