20177887975

素因数分解:

$5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{421}}^1\times {\mathrm{2659}}^1$

素因数の和:3200

約数の個数: 48

約数和(自身を含む): 28952035840

約数和(自身を除く): 8774147865

約数列:

[1, 5, 7, 25, 35, 103, 175, 421, 515, 721, 2105, 2575, 2659, 2947, 3605, 10525, 13295, 14735, 18025, 18613, 43363, 66475, 73675, 93065, 216815, 273877, 303541, 465325, 1084075, 1119439, 1369385, 1517705, 1917139, 5597195, 6846925, 7588525, 7836073, 9585695, 27985975, 39180365, 47928475, 115302217, 195901825, 576511085, 807115519, 2882555425, 4035577595, 20177887975]

約数ペア:

[(1, 20177887975), (5, 4035577595), (7, 2882555425), (25, 807115519), (35, 576511085), (103, 195901825), (175, 115302217), (421, 47928475), (515, 39180365), (721, 27985975), (2105, 9585695), (2575, 7836073), (2659, 7588525), (2947, 6846925), (3605, 5597195), (10525, 1917139), (13295, 1517705), (14735, 1369385), (18025, 1119439), (18613, 1084075), (43363, 465325), (66475, 303541), (73675, 273877), (93065, 216815)]