21905312

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4787}}^1$

素因数の和:4821

約数の個数: 48

約数和(自身を含む): 50676192

約数和(自身を除く): 28770880

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 143, 176, 208, 286, 352, 416, 572, 1144, 2288, 4576, 4787, 9574, 19148, 38296, 52657, 62231, 76592, 105314, 124462, 153184, 210628, 248924, 421256, 497848, 684541, 842512, 995696, 1369082, 1685024, 1991392, 2738164, 5476328, 10952656, 21905312]

約数ペア:

[(1, 21905312), (2, 10952656), (4, 5476328), (8, 2738164), (11, 1991392), (13, 1685024), (16, 1369082), (22, 995696), (26, 842512), (32, 684541), (44, 497848), (52, 421256), (88, 248924), (104, 210628), (143, 153184), (176, 124462), (208, 105314), (286, 76592), (352, 62231), (416, 52657), (572, 38296), (1144, 19148), (2288, 9574), (4576, 4787)]