21177688

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4787}}^1$

素因数の和:4879

約数の個数: 32

約数和(自身を含む): 45964800

約数和(自身を除く): 24787112

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4787, 9574, 19148, 33509, 38296, 67018, 134036, 268072, 378173, 756346, 1512692, 2647211, 3025384, 5294422, 10588844, 21177688]

約数ペア:

[(1, 21177688), (2, 10588844), (4, 5294422), (7, 3025384), (8, 2647211), (14, 1512692), (28, 756346), (56, 378173), (79, 268072), (158, 134036), (316, 67018), (553, 38296), (632, 33509), (1106, 19148), (2212, 9574), (4424, 4787)]