20681248

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5431}}^1$

素因数の和:5465

約数の個数: 48

約数和(自身を含む): 49279104

約数和(自身を除く): 28597856

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5431, 10862, 21724, 38017, 43448, 76034, 86896, 92327, 152068, 173792, 184654, 304136, 369308, 608272, 646289, 738616, 1216544, 1292578, 1477232, 2585156, 2954464, 5170312, 10340624, 20681248]

約数ペア:

[(1, 20681248), (2, 10340624), (4, 5170312), (7, 2954464), (8, 2585156), (14, 1477232), (16, 1292578), (17, 1216544), (28, 738616), (32, 646289), (34, 608272), (56, 369308), (68, 304136), (112, 184654), (119, 173792), (136, 152068), (224, 92327), (238, 86896), (272, 76034), (476, 43448), (544, 38017), (952, 21724), (1904, 10862), (3808, 5431)]