21199640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6883}}^1$

素因数の和:6912

約数の個数: 64

約数和(自身を含む): 59477760

約数和(自身を除く): 38278120

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6883, 13766, 27532, 34415, 48181, 55064, 68830, 75713, 96362, 137660, 151426, 192724, 240905, 275320, 302852, 378565, 385448, 481810, 529991, 605704, 757130, 963620, 1059982, 1514260, 1927240, 2119964, 2649955, 3028520, 4239928, 5299910, 10599820, 21199640]

約数ペア:

[(1, 21199640), (2, 10599820), (4, 5299910), (5, 4239928), (7, 3028520), (8, 2649955), (10, 2119964), (11, 1927240), (14, 1514260), (20, 1059982), (22, 963620), (28, 757130), (35, 605704), (40, 529991), (44, 481810), (55, 385448), (56, 378565), (70, 302852), (77, 275320), (88, 240905), (110, 192724), (140, 151426), (154, 137660), (220, 96362), (280, 75713), (308, 68830), (385, 55064), (440, 48181), (616, 34415), (770, 27532), (1540, 13766), (3080, 6883)]