20121836

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{347}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 42873600

約数和(自身を除く): 22751764

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 109, 133, 218, 266, 347, 436, 532, 694, 763, 1388, 1526, 2071, 2429, 3052, 4142, 4858, 6593, 8284, 9716, 13186, 14497, 26372, 28994, 37823, 46151, 57988, 75646, 92302, 151292, 184604, 264761, 529522, 718637, 1059044, 1437274, 2874548, 5030459, 10060918, 20121836]

約数ペア:

[(1, 20121836), (2, 10060918), (4, 5030459), (7, 2874548), (14, 1437274), (19, 1059044), (28, 718637), (38, 529522), (76, 264761), (109, 184604), (133, 151292), (218, 92302), (266, 75646), (347, 57988), (436, 46151), (532, 37823), (694, 28994), (763, 26372), (1388, 14497), (1526, 13186), (2071, 9716), (2429, 8284), (3052, 6593), (4142, 4858)]