21206502

素因数分解:

$2^1\times 3^3\times {\mathrm{499}}^1\times {\mathrm{787}}^1$

素因数の和:1297

約数の個数: 32

約数和(自身を含む): 47280000

約数和(自身を除く): 26073498

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 499, 787, 998, 1497, 1574, 2361, 2994, 4491, 4722, 7083, 8982, 13473, 14166, 21249, 26946, 42498, 392713, 785426, 1178139, 2356278, 3534417, 7068834, 10603251, 21206502]

約数ペア:

[(1, 21206502), (2, 10603251), (3, 7068834), (6, 3534417), (9, 2356278), (18, 1178139), (27, 785426), (54, 392713), (499, 42498), (787, 26946), (998, 21249), (1497, 14166), (1574, 13473), (2361, 8982), (2994, 7083), (4491, 4722)]