21037510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3947}}^1$

素因数の和:4008

約数の個数: 32

約数和(自身を含む): 41785632

約数和(自身を除く): 20748122

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3947, 5330, 7894, 19735, 39470, 51311, 102622, 161827, 256555, 323654, 513110, 809135, 1618270, 2103751, 4207502, 10518755, 21037510]

約数ペア:

[(1, 21037510), (2, 10518755), (5, 4207502), (10, 2103751), (13, 1618270), (26, 809135), (41, 513110), (65, 323654), (82, 256555), (130, 161827), (205, 102622), (410, 51311), (533, 39470), (1066, 19735), (2665, 7894), (3947, 5330)]