20776720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15277}}^1$

素因数の和:15307

約数の個数: 40

約数和(自身を含む): 51150744

約数和(自身を除く): 30374024

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15277, 30554, 61108, 76385, 122216, 152770, 244432, 259709, 305540, 519418, 611080, 1038836, 1222160, 1298545, 2077672, 2597090, 4155344, 5194180, 10388360, 20776720]

約数ペア:

[(1, 20776720), (2, 10388360), (4, 5194180), (5, 4155344), (8, 2597090), (10, 2077672), (16, 1298545), (17, 1222160), (20, 1038836), (34, 611080), (40, 519418), (68, 305540), (80, 259709), (85, 244432), (136, 152770), (170, 122216), (272, 76385), (340, 61108), (680, 30554), (1360, 15277)]