21464289

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 39536640

約数和(自身を除く): 18072351

約数列:

[1, 3, 7, 9, 11, 21, 33, 47, 63, 77, 99, 141, 231, 329, 423, 517, 659, 693, 987, 1551, 1977, 2961, 3619, 4613, 4653, 5931, 7249, 10857, 13839, 21747, 30973, 32571, 41517, 50743, 65241, 92919, 152229, 216811, 278757, 340703, 456687, 650433, 1022109, 1951299, 2384921, 3066327, 7154763, 21464289]

約数ペア:

[(1, 21464289), (3, 7154763), (7, 3066327), (9, 2384921), (11, 1951299), (21, 1022109), (33, 650433), (47, 456687), (63, 340703), (77, 278757), (99, 216811), (141, 152229), (231, 92919), (329, 65241), (423, 50743), (517, 41517), (659, 32571), (693, 30973), (987, 21747), (1551, 13839), (1977, 10857), (2961, 7249), (3619, 5931), (4613, 4653)]