21626871

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 34406400

約数和(自身を除く): 12779529

約数列:

[1, 3, 7, 21, 31, 93, 139, 217, 239, 417, 651, 717, 973, 1673, 2919, 4309, 5019, 7409, 12927, 22227, 30163, 33221, 51863, 90489, 99663, 155589, 232547, 697641, 1029851, 3089553, 7208957, 21626871]

約数ペア:

[(1, 21626871), (3, 7208957), (7, 3089553), (21, 1029851), (31, 697641), (93, 232547), (139, 155589), (217, 99663), (239, 90489), (417, 51863), (651, 33221), (717, 30163), (973, 22227), (1673, 12927), (2919, 7409), (4309, 5019)]