21385412

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 42201600

約数和(自身を除く): 20816188

約数列:

[1, 2, 4, 19, 29, 31, 38, 58, 62, 76, 116, 124, 313, 551, 589, 626, 899, 1102, 1178, 1252, 1798, 2204, 2356, 3596, 5947, 9077, 9703, 11894, 17081, 18154, 19406, 23788, 34162, 36308, 38812, 68324, 172463, 184357, 281387, 344926, 368714, 562774, 689852, 737428, 1125548, 5346353, 10692706, 21385412]

約数ペア:

[(1, 21385412), (2, 10692706), (4, 5346353), (19, 1125548), (29, 737428), (31, 689852), (38, 562774), (58, 368714), (62, 344926), (76, 281387), (116, 184357), (124, 172463), (313, 68324), (551, 38812), (589, 36308), (626, 34162), (899, 23788), (1102, 19406), (1178, 18154), (1252, 17081), (1798, 11894), (2204, 9703), (2356, 9077), (3596, 5947)]