20681538

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4219}}^1$

素因数の和:4286

約数の個数: 32

約数和(自身を含む): 44563200

約数和(自身を除く): 23881662

約数列:

[1, 2, 3, 6, 19, 38, 43, 57, 86, 114, 129, 258, 817, 1634, 2451, 4219, 4902, 8438, 12657, 25314, 80161, 160322, 181417, 240483, 362834, 480966, 544251, 1088502, 3446923, 6893846, 10340769, 20681538]

約数ペア:

[(1, 20681538), (2, 10340769), (3, 6893846), (6, 3446923), (19, 1088502), (38, 544251), (43, 480966), (57, 362834), (86, 240483), (114, 181417), (129, 160322), (258, 80161), (817, 25314), (1634, 12657), (2451, 8438), (4219, 4902)]