19975011

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 31477248

約数和(自身を除く): 11502237

約数列:

[1, 3, 7, 21, 53, 131, 137, 159, 371, 393, 411, 917, 959, 1113, 2751, 2877, 6943, 7261, 17947, 20829, 21783, 48601, 50827, 53841, 125629, 145803, 152481, 376887, 951191, 2853573, 6658337, 19975011]

約数ペア:

[(1, 19975011), (3, 6658337), (7, 2853573), (21, 951191), (53, 376887), (131, 152481), (137, 145803), (159, 125629), (371, 53841), (393, 50827), (411, 48601), (917, 21783), (959, 20829), (1113, 17947), (2751, 7261), (2877, 6943)]