39720021

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{947}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 61157376

約数和(自身を除く): 21437355

約数列:

[1, 3, 11, 31, 33, 41, 93, 123, 341, 451, 947, 1023, 1271, 1353, 2841, 3813, 10417, 13981, 29357, 31251, 38827, 41943, 88071, 116481, 322927, 427097, 968781, 1203637, 1281291, 3610911, 13240007, 39720021]

約数ペア:

[(1, 39720021), (3, 13240007), (11, 3610911), (31, 1281291), (33, 1203637), (41, 968781), (93, 427097), (123, 322927), (341, 116481), (451, 88071), (947, 41943), (1023, 38827), (1271, 31251), (1353, 29357), (2841, 13981), (3813, 10417)]