201720813

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1901}}^1$

素因数の和:2105

約数の個数: 32

約数和(自身を含む): 319414272

約数和(自身を除く): 117693459

約数列:

[1, 3, 7, 21, 31, 93, 163, 217, 489, 651, 1141, 1901, 3423, 5053, 5703, 13307, 15159, 35371, 39921, 58931, 106113, 176793, 309863, 412517, 929589, 1237551, 2169041, 6507123, 9605753, 28817259, 67240271, 201720813]

約数ペア:

[(1, 201720813), (3, 67240271), (7, 28817259), (21, 9605753), (31, 6507123), (93, 2169041), (163, 1237551), (217, 929589), (489, 412517), (651, 309863), (1141, 176793), (1901, 106113), (3423, 58931), (5053, 39921), (5703, 35371), (13307, 15159)]