20320508

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 41094144

約数和(自身を除く): 20773636

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 127, 181, 221, 254, 362, 442, 508, 724, 884, 1651, 2159, 2353, 3077, 3302, 4318, 4706, 6154, 6604, 8636, 9412, 12308, 22987, 28067, 40001, 45974, 56134, 80002, 91948, 112268, 160004, 298831, 390779, 597662, 781558, 1195324, 1563116, 5080127, 10160254, 20320508]

約数ペア:

[(1, 20320508), (2, 10160254), (4, 5080127), (13, 1563116), (17, 1195324), (26, 781558), (34, 597662), (52, 390779), (68, 298831), (127, 160004), (181, 112268), (221, 91948), (254, 80002), (362, 56134), (442, 45974), (508, 40001), (724, 28067), (884, 22987), (1651, 12308), (2159, 9412), (2353, 8636), (3077, 6604), (3302, 6154), (4318, 4706)]