20920144

素因数分解:

$2^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1237}}^1$

素因数の和:1403

約数の個数: 40

約数和(自身を含む): 46667648

約数和(自身を除く): 25747504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 151, 302, 604, 1057, 1208, 1237, 2114, 2416, 2474, 4228, 4948, 8456, 8659, 9896, 16912, 17318, 19792, 34636, 69272, 138544, 186787, 373574, 747148, 1307509, 1494296, 2615018, 2988592, 5230036, 10460072, 20920144]

約数ペア:

[(1, 20920144), (2, 10460072), (4, 5230036), (7, 2988592), (8, 2615018), (14, 1494296), (16, 1307509), (28, 747148), (56, 373574), (112, 186787), (151, 138544), (302, 69272), (604, 34636), (1057, 19792), (1208, 17318), (1237, 16912), (2114, 9896), (2416, 8659), (2474, 8456), (4228, 4948)]