21949085

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 29721600

約数和(自身を除く): 7772515

約数列:

[1, 5, 19, 29, 31, 95, 145, 155, 257, 551, 589, 899, 1285, 2755, 2945, 4495, 4883, 7453, 7967, 17081, 24415, 37265, 39835, 85405, 141607, 151373, 231043, 708035, 756865, 1155215, 4389817, 21949085]

約数ペア:

[(1, 21949085), (5, 4389817), (19, 1155215), (29, 756865), (31, 708035), (95, 231043), (145, 151373), (155, 141607), (257, 85405), (551, 39835), (589, 37265), (899, 24415), (1285, 17081), (2755, 7967), (2945, 7453), (4495, 4883)]