21686288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6133}}^1$

素因数の和:6171

約数の個数: 40

約数和(自身を含む): 47918808

約数和(自身を除く): 26232520

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 6133, 12266, 24532, 49064, 79729, 98128, 104261, 159458, 208522, 318916, 417044, 637832, 834088, 1275664, 1355393, 1668176, 2710786, 5421572, 10843144, 21686288]

約数ペア:

[(1, 21686288), (2, 10843144), (4, 5421572), (8, 2710786), (13, 1668176), (16, 1355393), (17, 1275664), (26, 834088), (34, 637832), (52, 417044), (68, 318916), (104, 208522), (136, 159458), (208, 104261), (221, 98128), (272, 79729), (442, 49064), (884, 24532), (1768, 12266), (3536, 6133)]