21128142

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{881}}^1$

素因数の和:1464

約数の個数: 32

約数和(自身を含む): 48432384

約数和(自身を除く): 27304242

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 571, 881, 1142, 1713, 1762, 2643, 3426, 3997, 5286, 6167, 7994, 11991, 12334, 18501, 23982, 37002, 503051, 1006102, 1509153, 3018306, 3521357, 7042714, 10564071, 21128142]

約数ペア:

[(1, 21128142), (2, 10564071), (3, 7042714), (6, 3521357), (7, 3018306), (14, 1509153), (21, 1006102), (42, 503051), (571, 37002), (881, 23982), (1142, 18501), (1713, 12334), (1762, 11991), (2643, 7994), (3426, 6167), (3997, 5286)]