20584520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4253}}^1$

素因数の和:4286

約数の個数: 48

約数和(自身を含む): 50920380

約数和(自身を除く): 30335860

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4253, 4840, 8506, 17012, 21265, 34024, 42530, 46783, 85060, 93566, 170120, 187132, 233915, 374264, 467830, 514613, 935660, 1029226, 1871320, 2058452, 2573065, 4116904, 5146130, 10292260, 20584520]

約数ペア:

[(1, 20584520), (2, 10292260), (4, 5146130), (5, 4116904), (8, 2573065), (10, 2058452), (11, 1871320), (20, 1029226), (22, 935660), (40, 514613), (44, 467830), (55, 374264), (88, 233915), (110, 187132), (121, 170120), (220, 93566), (242, 85060), (440, 46783), (484, 42530), (605, 34024), (968, 21265), (1210, 17012), (2420, 8506), (4253, 4840)]