1209020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1061

約数の個数: 24

約数和(自身を含む): 2583168

約数和(自身を除く): 1374148

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 991, 1220, 1982, 3964, 4955, 9910, 19820, 60451, 120902, 241804, 302255, 604510, 1209020]

約数ペア:

[(1, 1209020), (2, 604510), (4, 302255), (5, 241804), (10, 120902), (20, 60451), (61, 19820), (122, 9910), (244, 4955), (305, 3964), (610, 1982), (991, 1220)]