20996768

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2969}}^1$

素因数の和:3009

約数の個数: 48

約数和(自身を含む): 47151720

約数和(自身を除く): 26154952

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 2969, 3536, 5938, 7072, 11876, 23752, 38597, 47504, 50473, 77194, 95008, 100946, 154388, 201892, 308776, 403784, 617552, 656149, 807568, 1235104, 1312298, 1615136, 2624596, 5249192, 10498384, 20996768]

約数ペア:

[(1, 20996768), (2, 10498384), (4, 5249192), (8, 2624596), (13, 1615136), (16, 1312298), (17, 1235104), (26, 807568), (32, 656149), (34, 617552), (52, 403784), (68, 308776), (104, 201892), (136, 154388), (208, 100946), (221, 95008), (272, 77194), (416, 50473), (442, 47504), (544, 38597), (884, 23752), (1768, 11876), (2969, 7072), (3536, 5938)]