21081488

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2237}}^1$

素因数の和:2295

約数の個数: 40

約数和(自身を含む): 44401920

約数和(自身を除く): 23320432

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 62, 76, 124, 152, 248, 304, 496, 589, 1178, 2237, 2356, 4474, 4712, 8948, 9424, 17896, 35792, 42503, 69347, 85006, 138694, 170012, 277388, 340024, 554776, 680048, 1109552, 1317593, 2635186, 5270372, 10540744, 21081488]

約数ペア:

[(1, 21081488), (2, 10540744), (4, 5270372), (8, 2635186), (16, 1317593), (19, 1109552), (31, 680048), (38, 554776), (62, 340024), (76, 277388), (124, 170012), (152, 138694), (248, 85006), (304, 69347), (496, 42503), (589, 35792), (1178, 17896), (2237, 9424), (2356, 8948), (4474, 4712)]