218699859

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{4201}}^1$

素因数の和:4315

約数の個数: 32

約数和(自身を含む): 347454976

約数和(自身を除く): 128755117

約数列:

[1, 3, 7, 21, 37, 67, 111, 201, 259, 469, 777, 1407, 2479, 4201, 7437, 12603, 17353, 29407, 52059, 88221, 155437, 281467, 466311, 844401, 1088059, 1970269, 3264177, 5910807, 10414279, 31242837, 72899953, 218699859]

約数ペア:

[(1, 218699859), (3, 72899953), (7, 31242837), (21, 10414279), (37, 5910807), (67, 3264177), (111, 1970269), (201, 1088059), (259, 844401), (469, 466311), (777, 281467), (1407, 155437), (2479, 88221), (4201, 52059), (7437, 29407), (12603, 17353)]