19399420

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4273}}^1$

素因数の和:4509

約数の個数: 24

約数和(自身を含む): 40927824

約数和(自身を除く): 21528404

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4273, 4540, 8546, 17092, 21365, 42730, 85460, 969971, 1939942, 3879884, 4849855, 9699710, 19399420]

約数ペア:

[(1, 19399420), (2, 9699710), (4, 4849855), (5, 3879884), (10, 1939942), (20, 969971), (227, 85460), (454, 42730), (908, 21365), (1135, 17092), (2270, 8546), (4273, 4540)]