21580664

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4643}}^1$

素因数の和:4739

約数の個数: 32

約数和(自身を含む): 46811520

約数和(自身を除く): 25230856

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 4643, 4648, 9286, 18572, 32501, 37144, 65002, 130004, 260008, 385369, 770738, 1541476, 2697583, 3082952, 5395166, 10790332, 21580664]

約数ペア:

[(1, 21580664), (2, 10790332), (4, 5395166), (7, 3082952), (8, 2697583), (14, 1541476), (28, 770738), (56, 385369), (83, 260008), (166, 130004), (332, 65002), (581, 37144), (664, 32501), (1162, 18572), (2324, 9286), (4643, 4648)]