20366440

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2243}}^1$

素因数の和:2481

約数の個数: 32

約数和(自身を含む): 46046880

約数和(自身を除く): 25680440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2243, 2270, 4486, 4540, 8972, 9080, 11215, 17944, 22430, 44860, 89720, 509161, 1018322, 2036644, 2545805, 4073288, 5091610, 10183220, 20366440]

約数ペア:

[(1, 20366440), (2, 10183220), (4, 5091610), (5, 4073288), (8, 2545805), (10, 2036644), (20, 1018322), (40, 509161), (227, 89720), (454, 44860), (908, 22430), (1135, 17944), (1816, 11215), (2243, 9080), (2270, 8972), (4486, 4540)]