21503744

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{4421}}^1$

素因数の和:4456

約数の個数: 36

約数和(自身を含む): 45192840

約数和(自身を除く): 23689096

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 608, 1216, 2432, 4421, 4864, 8842, 17684, 35368, 70736, 83999, 141472, 167998, 282944, 335996, 565888, 671992, 1131776, 1343984, 2687968, 5375936, 10751872, 21503744]

約数ペア:

[(1, 21503744), (2, 10751872), (4, 5375936), (8, 2687968), (16, 1343984), (19, 1131776), (32, 671992), (38, 565888), (64, 335996), (76, 282944), (128, 167998), (152, 141472), (256, 83999), (304, 70736), (608, 35368), (1216, 17684), (2432, 8842), (4421, 4864)]