19908784

素因数分解:

$2^4\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1193}}^1$

素因数の和:1357

約数の個数: 40

約数和(自身を含む): 44416800

約数和(自身を除く): 24508016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 149, 298, 596, 1043, 1192, 1193, 2086, 2384, 2386, 4172, 4772, 8344, 8351, 9544, 16688, 16702, 19088, 33404, 66808, 133616, 177757, 355514, 711028, 1244299, 1422056, 2488598, 2844112, 4977196, 9954392, 19908784]

約数ペア:

[(1, 19908784), (2, 9954392), (4, 4977196), (7, 2844112), (8, 2488598), (14, 1422056), (16, 1244299), (28, 711028), (56, 355514), (112, 177757), (149, 133616), (298, 66808), (596, 33404), (1043, 19088), (1192, 16702), (1193, 16688), (2086, 9544), (2384, 8351), (2386, 8344), (4172, 4772)]