21113864

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8171}}^1$

素因数の和:8213

約数の個数: 32

約数和(自身を含む): 44128800

約数和(自身を除く): 23014936

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8171, 16342, 32684, 65368, 138907, 155249, 277814, 310498, 555628, 620996, 1111256, 1241992, 2639233, 5278466, 10556932, 21113864]

約数ペア:

[(1, 21113864), (2, 10556932), (4, 5278466), (8, 2639233), (17, 1241992), (19, 1111256), (34, 620996), (38, 555628), (68, 310498), (76, 277814), (136, 155249), (152, 138907), (323, 65368), (646, 32684), (1292, 16342), (2584, 8171)]