21721294

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2272

約数の個数: 32

約数和(自身を含む): 40273920

約数和(自身を除く): 18552626

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 2207, 4414, 4921, 9842, 15449, 30898, 41933, 81659, 83866, 163318, 293531, 571613, 587062, 1143226, 1551521, 3103042, 10860647, 21721294]

約数ペア:

[(1, 21721294), (2, 10860647), (7, 3103042), (14, 1551521), (19, 1143226), (37, 587062), (38, 571613), (74, 293531), (133, 163318), (259, 83866), (266, 81659), (518, 41933), (703, 30898), (1406, 15449), (2207, 9842), (4414, 4921)]