21779408

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1193}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 48562368

約数和(自身を除く): 26782960

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1141, 1193, 1304, 2282, 2386, 2608, 4564, 4772, 8351, 9128, 9544, 16702, 18256, 19088, 33404, 66808, 133616, 194459, 388918, 777836, 1361213, 1555672, 2722426, 3111344, 5444852, 10889704, 21779408]

約数ペア:

[(1, 21779408), (2, 10889704), (4, 5444852), (7, 3111344), (8, 2722426), (14, 1555672), (16, 1361213), (28, 777836), (56, 388918), (112, 194459), (163, 133616), (326, 66808), (652, 33404), (1141, 19088), (1193, 18256), (1304, 16702), (2282, 9544), (2386, 9128), (2608, 8351), (4564, 4772)]