21477358

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:169

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20326418

約数列:

[1, 2, 7, 14, 17, 31, 34, 41, 62, 71, 82, 119, 142, 217, 238, 287, 434, 497, 527, 574, 697, 994, 1054, 1207, 1271, 1394, 2201, 2414, 2542, 2911, 3689, 4402, 4879, 5822, 7378, 8449, 8897, 9758, 15407, 16898, 17794, 20377, 21607, 30814, 37417, 40754, 43214, 49487, 74834, 90241, 98974, 151249, 180482, 261919, 302498, 346409, 523838, 631687, 692818, 1263374, 1534097, 3068194, 10738679, 21477358]

約数ペア:

[(1, 21477358), (2, 10738679), (7, 3068194), (14, 1534097), (17, 1263374), (31, 692818), (34, 631687), (41, 523838), (62, 346409), (71, 302498), (82, 261919), (119, 180482), (142, 151249), (217, 98974), (238, 90241), (287, 74834), (434, 49487), (497, 43214), (527, 40754), (574, 37417), (697, 30814), (994, 21607), (1054, 20377), (1207, 17794), (1271, 16898), (1394, 15407), (2201, 9758), (2414, 8897), (2542, 8449), (2911, 7378), (3689, 5822), (4402, 4879)]